25263830916 has 81 divisors (see below), whose sum is σ = 65107095781. Its totient is φ = 8260105728.

The previous prime is 25263830869. The next prime is 25263830929. The reversal of 25263830916 is 61903836252.

The square root of 25263830916 is 158946.

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

25263830916 is a `hidden beast` number, since 2 + 5 + 2 + 638 + 3 + 0 + 9 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15439056516 + 9824774400 = 124254^2 + 99120^2 .

It is a super-2 number, since 2×25263830916² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 56266660 + ... + 56267108.

Almost surely, 2^25263830916 is an apocalyptic number.

25263830916 is the 158946-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25263830916

25263830916 is an abundant number, since it is smaller than the sum of its proper divisors (39843264865).

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

25263830916 is an equidigital number, since it uses as much as digits as its factorization.

25263830916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 25263830916 in words is "twenty-five billion, two hundred sixty-three million, eight hundred thirty thousand, nine hundred sixteen".