102425931 has 16 divisors (see below), whose sum is σ = 152179200. Its totient is φ = 68087304.

The previous prime is 102425927. The next prime is 102425933. The reversal of 102425931 is 139524201.

It is not a de Polignac number, because 102425931 - 2² = 102425927 is a prime.

It is a super-2 number, since 2×102425931² = 20982142682433522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 102425895 and 102425904.

It is not an unprimeable number, because it can be changed into a prime (102425933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4410 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (9511200).

Almost surely, 2^102425931 is an apocalyptic number.

102425931 is a deficient number, since it is larger than the sum of its proper divisors (49753269).

102425931 is a wasteful number, since it uses less digits than its factorization.

102425931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935 (or 10929 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 102425931 is about 10120.5696974034. The cubic root of 102425931 is about 467.8823257727.

The spelling of 102425931 in words is "one hundred two million, four hundred twenty-five thousand, nine hundred thirty-one".