25162664013 has 20 divisors (see below), whose sum is σ = 37707285660. Its totient is φ = 16722173952.

The previous prime is 25162663997. The next prime is 25162664017. The reversal of 25162664013 is 31046626152.

25162664013 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 2 + 6 + 640 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5897779209 + 19264884804 = 76797^2 + 138798^2 .

It is not a de Polignac number, because 25162664013 - 2⁴ = 25162663997 is a prime.

It is a super-2 number, since 2×25162664013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25162664017) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 464308 + ... + 515661.

It is an arithmetic number, because the mean of its divisors is an integer number (1885364283).

Almost surely, 2^25162664013 is an apocalyptic number.

It is an amenable number.

25162664013 is a deficient number, since it is larger than the sum of its proper divisors (12544621647).

25162664013 is an equidigital number, since it uses as much as digits as its factorization.

25162664013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980298 (or 980289 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 25162664013 in words is "twenty-five billion, one hundred sixty-two million, six hundred sixty-four thousand, thirteen".