25509516275 has 12 divisors (see below), whose sum is σ = 31727374824. Its totient is φ = 20345952000.

The previous prime is 25509516257. The next prime is 25509516281. The reversal of 25509516275 is 57261590552.

It is not a de Polignac number, because 25509516275 - 2¹⁶ = 25509450739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1533086 + ... + 1549635.

It is an arithmetic number, because the mean of its divisors is an integer number (2643947902).

Almost surely, 2^25509516275 is an apocalyptic number.

25509516275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25509516275 is a deficient number, since it is larger than the sum of its proper divisors (6217858549).

25509516275 is a wasteful number, since it uses less digits than its factorization.

25509516275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083062 (or 3083057 counting only the distinct ones).

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

The spelling of 25509516275 in words is "twenty-five billion, five hundred nine million, five hundred sixteen thousand, two hundred seventy-five".