25057513780 has 24 divisors (see below), whose sum is σ = 56668531752. Its totient is φ = 9252004992.

The previous prime is 25057513763. The next prime is 25057513837. The reversal of 25057513780 is 8731575052.

It can be written as a sum of positive squares in 4 ways, for example, as 3444985636 + 21612528144 = 58694^2 + 147012^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48187267 + ... + 48187786.

It is an arithmetic number, because the mean of its divisors is an integer number (2361188823).

Almost surely, 2^25057513780 is an apocalyptic number.

25057513780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25057513780 is an abundant number, since it is smaller than the sum of its proper divisors (31611017972).

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

25057513780 is a wasteful number, since it uses less digits than its factorization.

25057513780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96375075 (or 96375073 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 25057513780 in words is "twenty-five billion, fifty-seven million, five hundred thirteen thousand, seven hundred eighty".