25562970840 has 64 divisors (see below), whose sum is σ = 83660636160. Its totient is φ = 6197083520.

The previous prime is 25562970833. The next prime is 25562970869. The reversal of 25562970840 is 4807926552.

It is a self number, because there is not a number n which added to its sum of digits gives 25562970840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9681624 + ... + 9684263.

It is an arithmetic number, because the mean of its divisors is an integer number (1307197440).

Almost surely, 2^25562970840 is an apocalyptic number.

25562970840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25562970840 is an abundant number, since it is smaller than the sum of its proper divisors (58097665320).

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

25562970840 is a wasteful number, since it uses less digits than its factorization.

25562970840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19365912 (or 19365908 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 25562970840 in words is "twenty-five billion, five hundred sixty-two million, nine hundred seventy thousand, eight hundred forty".