25677913133 has 4 divisors (see below), whose sum is σ = 25682061600. Its totient is φ = 25673764668.

The previous prime is 25677913111. The next prime is 25677913139. The reversal of 25677913133 is 33131977652.

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 25677913133 - 2²⁶ = 25610804269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25677913139) 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, 2064935 + ... + 2077332.

It is an arithmetic number, because the mean of its divisors is an integer number (6420515400).

Almost surely, 2^25677913133 is an apocalyptic number.

It is an amenable number.

25677913133 is a deficient number, since it is larger than the sum of its proper divisors (4148467).

25677913133 is an equidigital number, since it uses as much as digits as its factorization.

25677913133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148466.

The product of its digits is 714420, while the sum is 47.

The spelling of 25677913133 in words is "twenty-five billion, six hundred seventy-seven million, nine hundred thirteen thousand, one hundred thirty-three".