25477963896 has 64 divisors (see below), whose sum is σ = 79411841280. Its totient is φ = 6617652480.

The previous prime is 25477963877. The next prime is 25477963961. The reversal of 25477963896 is 69836977452.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6891541 + ... + 6895236.

It is an arithmetic number, because the mean of its divisors is an integer number (1240810020).

Almost surely, 2^25477963896 is an apocalyptic number.

It is an amenable number.

25477963896 is an abundant number, since it is smaller than the sum of its proper divisors (53933877384).

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

25477963896 is a wasteful number, since it uses less digits than its factorization.

25477963896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786804 (or 13786800 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 66.

The spelling of 25477963896 in words is "twenty-five billion, four hundred seventy-seven million, nine hundred sixty-three thousand, eight hundred ninety-six".