25765564044 has 24 divisors (see below), whose sum is σ = 65585072448. Its totient is φ = 7807746640.

The previous prime is 25765564003. The next prime is 25765564049. The reversal of 25765564044 is 44046556752.

It is a junction number, because it is equal to n+sod(n) for n = 25765563984 and 25765564002.

It is not an unprimeable number, because it can be changed into a prime (25765564049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97596702 + ... + 97596965.

It is an arithmetic number, because the mean of its divisors is an integer number (2732711352).

Almost surely, 2^25765564044 is an apocalyptic number.

It is an amenable number.

25765564044 is an abundant number, since it is smaller than the sum of its proper divisors (39819508404).

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

25765564044 is a wasteful number, since it uses less digits than its factorization.

25765564044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195193685 (or 195193683 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 48.

The spelling of 25765564044 in words is "twenty-five billion, seven hundred sixty-five million, five hundred sixty-four thousand, forty-four".