25704322431 has 8 divisors (see below), whose sum is σ = 34281945984. Its totient is φ = 17131456920.

The previous prime is 25704322393. The next prime is 25704322447. The reversal of 25704322431 is 13422340752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25704322431 - 2⁹ = 25704321919 is a prime.

It is a super-2 number, since 2×25704322431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25704322392 and 25704322401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25704302431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176885 + ... + 1198526.

It is an arithmetic number, because the mean of its divisors is an integer number (4285243248).

Almost surely, 2^25704322431 is an apocalyptic number.

25704322431 is a deficient number, since it is larger than the sum of its proper divisors (8577623553).

25704322431 is a wasteful number, since it uses less digits than its factorization.

25704322431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379021.

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 25704322431 in words is "twenty-five billion, seven hundred four million, three hundred twenty-two thousand, four hundred thirty-one".