102090625 has 48 divisors (see below), whose sum is σ = 157489920. Its totient is φ = 64440000.

The previous prime is 102090617. The next prime is 102090683. The reversal of 102090625 is 526090201.

It is not a de Polignac number, because 102090625 - 2³ = 102090617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 102090625.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 284196 + ... + 284554.

It is an arithmetic number, because the mean of its divisors is an integer number (3281040).

Almost surely, 2^102090625 is an apocalyptic number.

It is an amenable number.

102090625 is a deficient number, since it is larger than the sum of its proper divisors (55399295).

102090625 is an frugal number, since it uses more digits than its factorization.

102090625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 102090625 is about 10103.9905482933. The cubic root of 102090625 is about 467.3712076231.

The spelling of 102090625 in words is "one hundred two million, ninety thousand, six hundred twenty-five".