25116611512 has 64 divisors (see below), whose sum is σ = 50181405120. Its totient is φ = 11744575488.

The previous prime is 25116611503. The next prime is 25116611519. The reversal of 25116611512 is 21511661152.

It is a super-2 number, since 2×25116611512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25116611519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20637528 + ... + 20638744.

It is an arithmetic number, because the mean of its divisors is an integer number (784084455).

Almost surely, 2^25116611512 is an apocalyptic number.

It is an amenable number.

25116611512 is a deficient number, since it is larger than the sum of its proper divisors (25064793608).

25116611512 is a wasteful number, since it uses less digits than its factorization.

25116611512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2076 counting only the distinct ones).

The product of its digits is 3600, while the sum is 31.

The spelling of 25116611512 in words is "twenty-five billion, one hundred sixteen million, six hundred eleven thousand, five hundred twelve".