25710869632 has 128 divisors (see below), whose sum is σ = 62078832000. Its totient is φ = 10354507776.

The previous prime is 25710869603. The next prime is 25710869633. The reversal of 25710869632 is 23696801752.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×25710869632² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25710869633) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16282219 + ... + 16283797.

It is an arithmetic number, because the mean of its divisors is an integer number (484990875).

Almost surely, 2^25710869632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25710869632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31039416000).

25710869632 is an abundant number, since it is smaller than the sum of its proper divisors (36367962368).

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

25710869632 is a wasteful number, since it uses less digits than its factorization.

25710869632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 25710869632 in words is "twenty-five billion, seven hundred ten million, eight hundred sixty-nine thousand, six hundred thirty-two".