25266071272 has 16 divisors (see below), whose sum is σ = 51018028740. Its totient is φ = 11661263616.

The previous prime is 25266071269. The next prime is 25266071317. The reversal of 25266071272 is 27217066252.

It can be written as a sum of positive squares in 2 ways, for example, as 22700243556 + 2565827716 = 150666^2 + 50654^2 .

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, 121471393 + ... + 121471600.

Almost surely, 2^25266071272 is an apocalyptic number.

It is an amenable number.

25266071272 is an abundant number, since it is smaller than the sum of its proper divisors (25751957468).

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

25266071272 is a wasteful number, since it uses less digits than its factorization.

25266071272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242943012 (or 242943008 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 25266071272 in words is "twenty-five billion, two hundred sixty-six million, seventy-one thousand, two hundred seventy-two".