25700131456 has 16 divisors (see below), whose sum is σ = 51199480890. Its totient is φ = 12850065664.

The previous prime is 25700131421. The next prime is 25700131459. The reversal of 25700131456 is 65413100752.

It can be written as a sum of positive squares in only one way, i.e., 17578517056 + 8121614400 = 132584^2 + 90120^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (25700131459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100391011 + ... + 100391266.

Almost surely, 2^25700131456 is an apocalyptic number.

It is an amenable number.

25700131456 is a deficient number, since it is larger than the sum of its proper divisors (25499349434).

25700131456 is an equidigital number, since it uses as much as digits as its factorization.

25700131456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200782291 (or 200782279 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 25700131456 in words is "twenty-five billion, seven hundred million, one hundred thirty-one thousand, four hundred fifty-six".