2565126772 has 24 divisors (see below), whose sum is σ = 4854528000. Its totient is φ = 1178945376.

The previous prime is 2565126769. The next prime is 2565126791. The reversal of 2565126772 is 2776215652.

2565126772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2565126772² = 13159750712862279968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90772 + ... + 115627.

It is an arithmetic number, because the mean of its divisors is an integer number (202272000).

Almost surely, 2^2565126772 is an apocalyptic number.

It is an amenable number.

2565126772 is a deficient number, since it is larger than the sum of its proper divisors (2289401228).

2565126772 is a wasteful number, since it uses less digits than its factorization.

2565126772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206655 (or 206653 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 2565126772 is about 50647.0805871375. The cubic root of 2565126772 is about 1368.8933418349.

The spelling of 2565126772 in words is "two billion, five hundred sixty-five million, one hundred twenty-six thousand, seven hundred seventy-two".