25028505616 has 15 divisors (see below), whose sum is σ = 48493955743. Its totient is φ = 12513936400.

The previous prime is 25028505587. The next prime is 25028505641. The reversal of 25028505616 is 61650582052.

The square root of 25028505616 is 158204.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 613041 + ... + 652591.

Almost surely, 2^25028505616 is an apocalyptic number.

25028505616 is the 158204-th square number.

It is an amenable number.

25028505616 is a deficient number, since it is larger than the sum of its proper divisors (23465450127).

25028505616 is an frugal number, since it uses more digits than its factorization.

25028505616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79110 (or 39553 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 25028505616 in words is "twenty-five billion, twenty-eight million, five hundred five thousand, six hundred sixteen".