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20332325 = 521373857
BaseRepresentation
bin100110110001…
…1111100100101
31102020222201002
41031203330211
520201113300
62003443045
7334551626
oct115437445
942228632
1020332325
1110527a82
126986485
13429b780
1429b3a4d
151bb95d5
hex1363f25

20332325 has 24 divisors (see below), whose sum is σ = 27555528. Its totient is φ = 14791680.

The previous prime is 20332313. The next prime is 20332327. The reversal of 20332325 is 52323302.

It can be written as a sum of positive squares in 12 ways, for example, as 3694084 + 16638241 = 1922^2 + 4079^2 .

It is not a de Polignac number, because 20332325 - 210 = 20331301 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20332297 and 20332306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23297 + ... + 24153.

It is an arithmetic number, because the mean of its divisors is an integer number (1148147).

Almost surely, 220332325 is an apocalyptic number.

20332325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20332325 is a deficient number, since it is larger than the sum of its proper divisors (7223203).

20332325 is a wasteful number, since it uses less digits than its factorization.

20332325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 20332325 is about 4509.1379442195. The cubic root of 20332325 is about 272.9369585233.

Adding to 20332325 its reverse (52323302), we get a palindrome (72655627).

The spelling of 20332325 in words is "twenty million, three hundred thirty-two thousand, three hundred twenty-five".

Divisors: 1 5 13 25 65 73 325 365 857 949 1825 4285 4745 11141 21425 23725 55705 62561 278525 312805 813293 1564025 4066465 20332325