25710998992 has 40 divisors (see below), whose sum is σ = 56939014400. Its totient is φ = 11017544832.

The previous prime is 25710998941. The next prime is 25710998993. The reversal of 25710998992 is 29989901752.

It is a super-2 number, since 2×25710998992² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25710998992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25710998993) 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, 1657609 + ... + 1673047.

It is an arithmetic number, because the mean of its divisors is an integer number (1423475360).

Almost surely, 2^25710998992 is an apocalyptic number.

It is an amenable number.

25710998992 is an abundant number, since it is smaller than the sum of its proper divisors (31228015408).

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

25710998992 is a wasteful number, since it uses less digits than its factorization.

25710998992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30323 (or 30317 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 61.

It can be divided in two parts, 25 and 710998992, that added together give a palindrome (710999017).

The spelling of 25710998992 in words is "twenty-five billion, seven hundred ten million, nine hundred ninety-eight thousand, nine hundred ninety-two".