25456990 has 32 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 8845824.

The previous prime is 25456969. The next prime is 25456993. The reversal of 25456990 is 9965452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25456993) 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, 3550 + ... + 7969.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^25456990 is an apocalyptic number.

25456990 is an abundant number, since it is smaller than the sum of its proper divisors (26797730).

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

25456990 is a wasteful number, since it uses less digits than its factorization.

25456990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 25456990 is about 5045.4920473627. The cubic root of 25456990 is about 294.1726892045.

The spelling of 25456990 in words is "twenty-five million, four hundred fifty-six thousand, nine hundred ninety".