25313053257 has 16 divisors (see below), whose sum is σ = 37503607360. Its totient is φ = 16874114400.

The previous prime is 25313053253. The next prime is 25313053279. The reversal of 25313053257 is 75235031352.

25313053257 is a `hidden beast` number, since 25 + 3 + 1 + 305 + 325 + 7 = 666.

It is not a de Polignac number, because 25313053257 - 2² = 25313053253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25313053253) 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, 465957 + ... + 517437.

It is an arithmetic number, because the mean of its divisors is an integer number (2343975460).

Almost surely, 2^25313053257 is an apocalyptic number.

25313053257 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25313053257 is a deficient number, since it is larger than the sum of its proper divisors (12190554103).

25313053257 is a wasteful number, since it uses less digits than its factorization.

25313053257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69701 (or 69695 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 36.

The spelling of 25313053257 in words is "twenty-five billion, three hundred thirteen million, fifty-three thousand, two hundred fifty-seven".