25079277257 has 16 divisors (see below), whose sum is σ = 26655253632. Its totient is φ = 23546328960.

The previous prime is 25079277203. The next prime is 25079277277. The reversal of 25079277257 is 75277297052.

It is a cyclic number.

It is not a de Polignac number, because 25079277257 - 2⁸ = 25079277001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25079277199 and 25079277208.

It is not an unprimeable number, because it can be changed into a prime (25079277277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404063 + ... + 461979.

It is an arithmetic number, because the mean of its divisors is an integer number (1665953352).

Almost surely, 2^25079277257 is an apocalyptic number.

It is an amenable number.

25079277257 is a deficient number, since it is larger than the sum of its proper divisors (1575976375).

25079277257 is a wasteful number, since it uses less digits than its factorization.

25079277257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58288.

The product of its (nonzero) digits is 4321800, while the sum is 53.

The spelling of 25079277257 in words is "twenty-five billion, seventy-nine million, two hundred seventy-seven thousand, two hundred fifty-seven".