25678590 has 32 divisors (see below), whose sum is σ = 70433280. Its totient is φ = 5869344.

The previous prime is 25678589. The next prime is 25678637. The reversal of 25678590 is 9587652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60930 + ... + 61349.

It is an arithmetic number, because the mean of its divisors is an integer number (2201040).

Almost surely, 2^25678590 is an apocalyptic number.

25678590 is an abundant number, since it is smaller than the sum of its proper divisors (44754690).

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

25678590 is a wasteful number, since it uses less digits than its factorization.

25678590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122296.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 25678590 is about 5067.4046611653. The cubic root of 25678590 is about 295.0238034991.

The spelling of 25678590 in words is "twenty-five million, six hundred seventy-eight thousand, five hundred ninety".