25720839363 has 4 divisors (see below), whose sum is σ = 34294452488. Its totient is φ = 17147226240.

The previous prime is 25720839337. The next prime is 25720839371. The reversal of 25720839363 is 36393802752.

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

It is not a de Polignac number, because 25720839363 - 2²⁴ = 25704062147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25720879363) 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, 4286806558 + ... + 4286806563.

It is an arithmetic number, because the mean of its divisors is an integer number (8573613122).

Almost surely, 2^25720839363 is an apocalyptic number.

25720839363 is a deficient number, since it is larger than the sum of its proper divisors (8573613125).

25720839363 is an equidigital number, since it uses as much as digits as its factorization.

25720839363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8573613124.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 25720839363 in words is "twenty-five billion, seven hundred twenty million, eight hundred thirty-nine thousand, three hundred sixty-three".