25675627557 has 4 divisors (see below), whose sum is σ = 34234170080. Its totient is φ = 17117085036.

The previous prime is 25675627541. The next prime is 25675627573. The reversal of 25675627557 is 75572657652.

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 an interprime number because it is at equal distance from previous prime (25675627541) and next prime (25675627573).

It is not a de Polignac number, because 25675627557 - 2⁴ = 25675627541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25675627497 and 25675627506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25675627577) 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, 4279271257 + ... + 4279271262.

It is an arithmetic number, because the mean of its divisors is an integer number (8558542520).

Almost surely, 2^25675627557 is an apocalyptic number.

It is an amenable number.

25675627557 is a deficient number, since it is larger than the sum of its proper divisors (8558542523).

25675627557 is an equidigital number, since it uses as much as digits as its factorization.

25675627557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8558542522.

The product of its digits is 30870000, while the sum is 57.

The spelling of 25675627557 in words is "twenty-five billion, six hundred seventy-five million, six hundred twenty-seven thousand, five hundred fifty-seven".