25772266624 has 32 divisors (see below), whose sum is σ = 55292666940. Its totient is φ = 11894891520.

The previous prime is 25772266607. The next prime is 25772266627. The reversal of 25772266624 is 42666227752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25017116224 + 755150400 = 158168^2 + 27480^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (25772266627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7742407 + ... + 7745734.

Almost surely, 2^25772266624 is an apocalyptic number.

It is an amenable number.

25772266624 is an abundant number, since it is smaller than the sum of its proper divisors (29520400316).

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

25772266624 is a wasteful number, since it uses less digits than its factorization.

25772266624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15488168 (or 15488156 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 49.

The spelling of 25772266624 in words is "twenty-five billion, seven hundred seventy-two million, two hundred sixty-six thousand, six hundred twenty-four".