25316474657 has 4 divisors (see below), whose sum is σ = 25316839680. Its totient is φ = 25316109636.

The previous prime is 25316474653. The next prime is 25316474671. The reversal of 25316474657 is 75647461352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25316474657 - 2² = 25316474653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25316474653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42857 + ... + 229062.

It is an arithmetic number, because the mean of its divisors is an integer number (6329209920).

Almost surely, 2^25316474657 is an apocalyptic number.

It is an amenable number.

25316474657 is a deficient number, since it is larger than the sum of its proper divisors (365023).

25316474657 is an equidigital number, since it uses as much as digits as its factorization.

25316474657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365022.

The product of its digits is 4233600, while the sum is 50.

The spelling of 25316474657 in words is "twenty-five billion, three hundred sixteen million, four hundred seventy-four thousand, six hundred fifty-seven".