25935990 has 16 divisors (see below), whose sum is σ = 62246448. Its totient is φ = 6916256.

The previous prime is 25935979. The next prime is 25935991. The reversal of 25935990 is 9953952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25935991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432237 + ... + 432296.

It is an arithmetic number, because the mean of its divisors is an integer number (3890403).

Almost surely, 2^25935990 is an apocalyptic number.

25935990 is an abundant number, since it is smaller than the sum of its proper divisors (36310458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25935990 is a wasteful number, since it uses less digits than its factorization.

25935990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864543.

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 25935990 is about 5092.7389487387. The cubic root of 25935990 is about 296.0062924764.

The spelling of 25935990 in words is "twenty-five million, nine hundred thirty-five thousand, nine hundred ninety".