25191040928479 has 4 divisors (see below), whose sum is σ = 25193956229440. Its totient is φ = 25188125627520.

The previous prime is 25191040928447. The next prime is 25191040928497. The reversal of 25191040928479 is 97482904019152.

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

It is a cyclic number.

It is not a de Polignac number, because 25191040928479 - 2⁵ = 25191040928447 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 (25191040926479) 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, 1457637519 + ... + 1457654800.

It is an arithmetic number, because the mean of its divisors is an integer number (6298489057360).

Almost surely, 2^{25191040928479} is an apocalyptic number.

25191040928479 is a deficient number, since it is larger than the sum of its proper divisors (2915300961).

25191040928479 is an equidigital number, since it uses as much as digits as its factorization.

25191040928479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915300960.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 25191040928479 in words is "twenty-five trillion, one hundred ninety-one billion, forty million, nine hundred twenty-eight thousand, four hundred seventy-nine".