25377765375 has 16 divisors (see below), whose sum is σ = 42228602208. Its totient is φ = 13534808000.

The previous prime is 25377765319. The next prime is 25377765407. The reversal of 25377765375 is 57356777352.

It is a happy number.

It is not a de Polignac number, because 25377765375 - 2²¹ = 25375668223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33836646 + ... + 33837395.

It is an arithmetic number, because the mean of its divisors is an integer number (2639287638).

Almost surely, 2^25377765375 is an apocalyptic number.

25377765375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25377765375 is a deficient number, since it is larger than the sum of its proper divisors (16850836833).

25377765375 is an equidigital number, since it uses as much as digits as its factorization.

25377765375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67674059 (or 67674049 counting only the distinct ones).

The product of its digits is 32413500, while the sum is 57.

The spelling of 25377765375 in words is "twenty-five billion, three hundred seventy-seven million, seven hundred sixty-five thousand, three hundred seventy-five".