25478790 has 32 divisors (see below), whose sum is σ = 62574336. Its totient is φ = 6636000.

The previous prime is 25478777. The next prime is 25478797. The reversal of 25478790 is 9787452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478797) 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, 8586 + ... + 11165.

It is an arithmetic number, because the mean of its divisors is an integer number (1955448).

Almost surely, 2^25478790 is an apocalyptic number.

25478790 is an abundant number, since it is smaller than the sum of its proper divisors (37095546).

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

25478790 is a wasteful number, since it uses less digits than its factorization.

25478790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19804.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 25478790 is about 5047.6519293628. The cubic root of 25478790 is about 294.2566364808.

The spelling of 25478790 in words is "twenty-five million, four hundred seventy-eight thousand, seven hundred ninety".