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2020025 = 52721797
BaseRepresentation
bin111101101001010111001
310210121221202
413231022321
51004120100
6111143545
723112200
oct7551271
93717852
102020025
11115a747
12814bb5
135595a7
143a8237
1529d7d5
hex1ed2b9

2020025 has 36 divisors (see below), whose sum is σ = 3116988. Its totient is φ = 1290240.

The previous prime is 2020019. The next prime is 2020027. The reversal of 2020025 is 5200202.

2020025 = T36 + T37 + ... + T229.

It can be written as a sum of positive squares in 6 ways, for example, as 784 + 2019241 = 28^2 + 1421^2 .

It is not a de Polignac number, because 2020025 - 28 = 2019769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2019988 and 2020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20777 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (86583).

22020025 is an apocalyptic number.

2020025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2020025 is a deficient number, since it is larger than the sum of its proper divisors (1096963).

2020025 is a wasteful number, since it uses less digits than its factorization.

2020025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2020025 is about 1421.2758352973. The cubic root of 2020025 is about 126.4112079804.

Adding to 2020025 its reverse (5200202), we get a palindrome (7220227).

The spelling of 2020025 in words is "two million, twenty thousand, twenty-five".

Divisors: 1 5 7 17 25 35 49 85 97 119 175 245 425 485 595 679 833 1225 1649 2425 2975 3395 4165 4753 8245 11543 16975 20825 23765 41225 57715 80801 118825 288575 404005 2020025