25012271568 has 40 divisors (see below), whose sum is σ = 65186863488. Its totient is φ = 8263639552.

The previous prime is 25012271549. The next prime is 25012271651. The reversal of 25012271568 is 86517221052.

It is a super-2 number, since 2×25012271568² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2300280 + ... + 2311127.

Almost surely, 2^25012271568 is an apocalyptic number.

It is an amenable number.

25012271568 is an abundant number, since it is smaller than the sum of its proper divisors (40174591920).

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

25012271568 is a wasteful number, since it uses less digits than its factorization.

25012271568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611531 (or 4611525 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 25012271568 in words is "twenty-five billion, twelve million, two hundred seventy-one thousand, five hundred sixty-eight".