25975205516 has 12 divisors (see below), whose sum is σ = 48953272032. Its totient is φ = 11988556368.

The previous prime is 25975205453. The next prime is 25975205519. The reversal of 25975205516 is 61550257952.

It is a super-2 number, since 2×25975205516² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25975205519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249761540 + ... + 249761643.

It is an arithmetic number, because the mean of its divisors is an integer number (4079439336).

Almost surely, 2^25975205516 is an apocalyptic number.

25975205516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25975205516 is a deficient number, since it is larger than the sum of its proper divisors (22978066516).

25975205516 is a wasteful number, since it uses less digits than its factorization.

25975205516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499523200 (or 499523198 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 25975205516 in words is "twenty-five billion, nine hundred seventy-five million, two hundred five thousand, five hundred sixteen".