25965568290 has 32 divisors (see below), whose sum is σ = 65983092480. Its totient is φ = 6516848384.

The previous prime is 25965568271. The next prime is 25965568313. The reversal of 25965568290 is 9286556952.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25965568290.

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, 25455930 + ... + 25456949.

It is an arithmetic number, because the mean of its divisors is an integer number (2061971640).

Almost surely, 2^25965568290 is an apocalyptic number.

25965568290 is an abundant number, since it is smaller than the sum of its proper divisors (40017524190).

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

25965568290 is a wasteful number, since it uses less digits than its factorization.

25965568290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50912906.

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 25965568290 in words is "twenty-five billion, nine hundred sixty-five million, five hundred sixty-eight thousand, two hundred ninety".