25590113479 has 4 divisors (see below), whose sum is σ = 29245843984. Its totient is φ = 21934382976.

The previous prime is 25590113401. The next prime is 25590113489. The reversal of 25590113479 is 97431109552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25590113479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25590113489) 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, 1827865242 + ... + 1827865255.

It is an arithmetic number, because the mean of its divisors is an integer number (7311460996).

Almost surely, 2^25590113479 is an apocalyptic number.

25590113479 is a deficient number, since it is larger than the sum of its proper divisors (3655730505).

25590113479 is an equidigital number, since it uses as much as digits as its factorization.

25590113479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655730504.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 25590113479 in words is "twenty-five billion, five hundred ninety million, one hundred thirteen thousand, four hundred seventy-nine".