25965590 has 48 divisors (see below), whose sum is σ = 57250800. Its totient is φ = 8430912.

The previous prime is 25965557. The next prime is 25965607. The reversal of 25965590 is 9556952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7916 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (1192725).

Almost surely, 2^25965590 is an apocalyptic number.

25965590 is an abundant number, since it is smaller than the sum of its proper divisors (31285210).

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

25965590 is a wasteful number, since it uses less digits than its factorization.

25965590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 25965590 is about 5095.6442183496. The cubic root of 25965590 is about 296.1188574897.

The spelling of 25965590 in words is "twenty-five million, nine hundred sixty-five thousand, five hundred ninety".