25200400252 has 12 divisors (see below), whose sum is σ = 44848170360. Its totient is φ = 12386637296.

The previous prime is 25200400243. The next prime is 25200400273.

It is a happy number.

25200400252 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25200400252² (a number of 22 digits) 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 3 ways as a sum of consecutive naturals, for example, 53390443 + ... + 53390914.

It is an arithmetic number, because the mean of its divisors is an integer number (3737347530).

Almost surely, 2^25200400252 is an apocalyptic number.

It is an amenable number.

25200400252 is a deficient number, since it is larger than the sum of its proper divisors (19647770108).

25200400252 is a wasteful number, since it uses less digits than its factorization.

25200400252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106781420 (or 106781418 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The spelling of 25200400252 in words is "twenty-five billion, two hundred million, four hundred thousand, two hundred fifty-two".