25130621416 has 32 divisors (see below), whose sum is σ = 49968255240. Its totient is φ = 11808022528.

The previous prime is 25130621401. The next prime is 25130621423. The reversal of 25130621416 is 61412603152.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24886324516 + 244296900 = 157754^2 + 15630^2 .

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, 52681 + ... + 230296.

Almost surely, 2^25130621416 is an apocalyptic number.

It is an amenable number.

25130621416 is a deficient number, since it is larger than the sum of its proper divisors (24837633824).

25130621416 is a wasteful number, since it uses less digits than its factorization.

25130621416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283653 (or 283649 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 25130621416 in words is "twenty-five billion, one hundred thirty million, six hundred twenty-one thousand, four hundred sixteen".