25168553316 has 81 divisors (see below), whose sum is σ = 64422066891. Its totient is φ = 8285128704.

The previous prime is 25168553309. The next prime is 25168553323. The reversal of 25168553316 is 61335586152.

The square root of 25168553316 is 158646.

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

25168553316 is a `hidden beast` number, since 2 + 5 + 1 + 68 + 553 + 31 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (25168553309) and next prime (25168553323).

It can be written as a sum of positive squares in 4 ways, for example, as 832553316 + 24336000000 = 28854^2 + 156000^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 130406916 + ... + 130407108.

Almost surely, 2^25168553316 is an apocalyptic number.

25168553316 is the 158646-th square number.

It is an amenable number.

25168553316 is an abundant number, since it is smaller than the sum of its proper divisors (39253513575).

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

25168553316 is a wasteful number, since it uses less digits than its factorization.

25168553316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 335 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 25168553316 in words is "twenty-five billion, one hundred sixty-eight million, five hundred fifty-three thousand, three hundred sixteen".