25712277725 has 96 divisors (see below), whose sum is σ = 37403856000. Its totient is φ = 17401651200.

The previous prime is 25712277673. The next prime is 25712277739. The reversal of 25712277725 is 52777221752.

It is a happy number.

It is not a de Polignac number, because 25712277725 - 2⁸ = 25712277469 is a prime.

It is a super-2 number, since 2×25712277725² (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 25712277725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12248726 + ... + 12250824.

It is an arithmetic number, because the mean of its divisors is an integer number (389623500).

Almost surely, 2^25712277725 is an apocalyptic number.

25712277725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25712277725 is a deficient number, since it is larger than the sum of its proper divisors (11691578275).

25712277725 is a wasteful number, since it uses less digits than its factorization.

25712277725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2218 counting only the distinct ones).

The product of its digits is 960400, while the sum is 47.

The spelling of 25712277725 in words is "twenty-five billion, seven hundred twelve million, two hundred seventy-seven thousand, seven hundred twenty-five".