25753171664 has 40 divisors (see below), whose sum is σ = 54597413280. Its totient is φ = 11670595200.

The previous prime is 25753171649. The next prime is 25753171669. The reversal of 25753171664 is 46617135752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25753171669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162779 + ... + 279290.

It is an arithmetic number, because the mean of its divisors is an integer number (1364935332).

Almost surely, 2^25753171664 is an apocalyptic number.

It is an amenable number.

25753171664 is an abundant number, since it is smaller than the sum of its proper divisors (28844241616).

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

25753171664 is a wasteful number, since it uses less digits than its factorization.

25753171664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442419 (or 442413 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 47.

The spelling of 25753171664 in words is "twenty-five billion, seven hundred fifty-three million, one hundred seventy-one thousand, six hundred sixty-four".