2565725172 has 12 divisors (see below), whose sum is σ = 5986692096. Its totient is φ = 855241720.

The previous prime is 2565725147. The next prime is 2565725203. The reversal of 2565725172 is 2715275652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 106905204 + ... + 106905227.

It is an arithmetic number, because the mean of its divisors is an integer number (498891008).

Almost surely, 2^2565725172 is an apocalyptic number.

It is an amenable number.

2565725172 is an abundant number, since it is smaller than the sum of its proper divisors (3420966924).

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

2565725172 is a wasteful number, since it uses less digits than its factorization.

2565725172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213810438 (or 213810436 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The square root of 2565725172 is about 50652.9877894681. The cubic root of 2565725172 is about 1368.9997799904. Note that the first 3 decimals are identical.

The spelling of 2565725172 in words is "two billion, five hundred sixty-five million, seven hundred twenty-five thousand, one hundred seventy-two".