25487422944 has 24 divisors (see below), whose sum is σ = 66904485480. Its totient is φ = 8495807616.

The previous prime is 25487422927. The next prime is 25487422951. The reversal of 25487422944 is 44922478452.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132746899 + ... + 132747090.

It is an arithmetic number, because the mean of its divisors is an integer number (2787686895).

Almost surely, 2^25487422944 is an apocalyptic number.

25487422944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25487422944 is an abundant number, since it is smaller than the sum of its proper divisors (41417062536).

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

25487422944 is a wasteful number, since it uses less digits than its factorization.

25487422944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265494002 (or 265493994 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 51.

The spelling of 25487422944 in words is "twenty-five billion, four hundred eighty-seven million, four hundred twenty-two thousand, nine hundred forty-four".