25783966823572 has 12 divisors (see below), whose sum is σ = 45122309287636. Its totient is φ = 12891878455680.

The previous prime is 25783966823567. The next prime is 25783966823581. The reversal of 25783966823572 is 27532866938752.

It can be written as a sum of positive squares in 2 ways, for example, as 17159196077956 + 8624770745616 = 4142366^2 + 2936796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25783966823495 and 25783966823504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25684983 + ... + 26669950.

Almost surely, 2^{25783966823572} is an apocalyptic number.

It is an amenable number.

25783966823572 is a deficient number, since it is larger than the sum of its proper divisors (19338342464064).

25783966823572 is a wasteful number, since it uses less digits than its factorization.

25783966823572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52478058 (or 52478056 counting only the distinct ones).

The product of its digits is 1828915200, while the sum is 73.

The spelling of 25783966823572 in words is "twenty-five trillion, seven hundred eighty-three billion, nine hundred sixty-six million, eight hundred twenty-three thousand, five hundred seventy-two".