25275527525 has 12 divisors (see below), whose sum is σ = 31403244900. Its totient is φ = 20180686080.

The previous prime is 25275527503. The next prime is 25275527587. The reversal of 25275527525 is 52572557252.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3034577569 + 22240949956 = 55087^2 + 149134^2 .

It is not a de Polignac number, because 25275527525 - 2⁸ = 25275527269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25275527525.

It is a congruent 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, 980420 + ... + 1005869.

It is an arithmetic number, because the mean of its divisors is an integer number (2616937075).

Almost surely, 2^25275527525 is an apocalyptic number.

25275527525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25275527525 is a deficient number, since it is larger than the sum of its proper divisors (6127717375).

25275527525 is a wasteful number, since it uses less digits than its factorization.

25275527525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986808 (or 1986803 counting only the distinct ones).

The product of its digits is 2450000, while the sum is 47.

The spelling of 25275527525 in words is "twenty-five billion, two hundred seventy-five million, five hundred twenty-seven thousand, five hundred twenty-five".