25052583621 has 32 divisors (see below), whose sum is σ = 37153976832. Its totient is φ = 14918791680.

The previous prime is 25052583617. The next prime is 25052583623. The reversal of 25052583621 is 12638525052.

It is not a de Polignac number, because 25052583621 - 2² = 25052583617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 25052583621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25052583623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67876 + ... + 233906.

It is an arithmetic number, because the mean of its divisors is an integer number (1161061776).

Almost surely, 2^25052583621 is an apocalyptic number.

It is an amenable number.

25052583621 is a deficient number, since it is larger than the sum of its proper divisors (12101393211).

25052583621 is a wasteful number, since it uses less digits than its factorization.

25052583621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166173.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 25052583621 in words is "twenty-five billion, fifty-two million, five hundred eighty-three thousand, six hundred twenty-one".