25667248057 has 12 divisors (see below), whose sum is σ = 29872336788. Its totient is φ = 21961280000.

The previous prime is 25667248043. The next prime is 25667248063. The reversal of 25667248057 is 75084276652.

It can be written as a sum of positive squares in 2 ways, for example, as 12989388841 + 12677859216 = 113971^2 + 112596^2 .

It is not a de Polignac number, because 25667248057 - 2²³ = 25658859449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25667247995 and 25667248013.

It is not an unprimeable number, because it can be changed into a prime (25667248027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6236944 + ... + 6241057.

It is an arithmetic number, because the mean of its divisors is an integer number (2489361399).

Almost surely, 2^25667248057 is an apocalyptic number.

It is an amenable number.

25667248057 is a deficient number, since it is larger than the sum of its proper divisors (4205088731).

25667248057 is a wasteful number, since it uses less digits than its factorization.

25667248057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12478040 (or 12478029 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 25667248057 in words is "twenty-five billion, six hundred sixty-seven million, two hundred forty-eight thousand, fifty-seven".