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103020025 = 5237111373
BaseRepresentation
bin1100010001111…
…11010111111001
321011211221220111
412020333113321
5202333120100
614120024321
72360440633
oct610772771
9234757814
10103020025
1153174519
122a6020a1
13184602c4
14d979a53
15909e6ba
hex623f5f9

103020025 has 12 divisors (see below), whose sum is σ = 131198572. Its totient is φ = 80187840.

The previous prime is 103020023. The next prime is 103020041. The reversal of 103020025 is 520020301.

It can be written as a sum of positive squares in 6 ways, for example, as 16548624 + 86471401 = 4068^2 + 9299^2 .

It is not a de Polignac number, because 103020025 - 21 = 103020023 is a prime.

It is a super-2 number, since 2×1030200252 = 21226251102001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103019987 and 103020014.

It is not an unprimeable number, because it can be changed into a prime (103020023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54762 + ... + 56611.

Almost surely, 2103020025 is an apocalyptic number.

It is an amenable number.

103020025 is a deficient number, since it is larger than the sum of its proper divisors (28178547).

103020025 is a wasteful number, since it uses less digits than its factorization.

103020025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111420 (or 111415 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 103020025 is about 10149.8780780855. The cubic root of 103020025 is about 468.7851908395.

Adding to 103020025 its reverse (520020301), we get a palindrome (623040326).

It can be divided in two parts, 1030200 and 25, that added together give a square (1030225 = 10152).

The spelling of 103020025 in words is "one hundred three million, twenty thousand, twenty-five".

Divisors: 1 5 25 37 185 925 111373 556865 2784325 4120801 20604005 103020025