25212358656 has 117 divisors (see below), whose sum is σ = 72914979631. Its totient is φ = 8393957376.

The previous prime is 25212358637. The next prime is 25212358669. The reversal of 25212358656 is 65685321252.

The square root of 25212358656 is 158784.

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

25212358656 is a `hidden beast` number, since 2 + 5 + 2 + 12 + 3 + 586 + 56 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30486115 + ... + 30486941.

Almost surely, 2^25212358656 is an apocalyptic number.

25212358656 is the 158784-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25212358656

25212358656 is an abundant number, since it is smaller than the sum of its proper divisors (47702620975).

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

25212358656 is an frugal number, since it uses more digits than its factorization.

25212358656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684 (or 832 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 25212358656 in words is "twenty-five billion, two hundred twelve million, three hundred fifty-eight thousand, six hundred fifty-six".