25403630793 has 4 divisors (see below), whose sum is σ = 33871507728. Its totient is φ = 16935753860.

The previous prime is 25403630783. The next prime is 25403630809. The reversal of 25403630793 is 39703630452.

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 25403630793 - 2⁸ = 25403630537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25403630713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4233938463 + ... + 4233938468.

It is an arithmetic number, because the mean of its divisors is an integer number (8467876932).

Almost surely, 2^25403630793 is an apocalyptic number.

It is an amenable number.

25403630793 is a deficient number, since it is larger than the sum of its proper divisors (8467876935).

25403630793 is an equidigital number, since it uses as much as digits as its factorization.

25403630793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8467876934.

The product of its (nonzero) digits is 408240, while the sum is 42.

The spelling of 25403630793 in words is "twenty-five billion, four hundred three million, six hundred thirty thousand, seven hundred ninety-three".