25266565167 has 16 divisors (see below), whose sum is σ = 34632423168. Its totient is φ = 16375446720.

The previous prime is 25266565147. The next prime is 25266565183. The reversal of 25266565167 is 76156566252.

It is not a de Polignac number, because 25266565167 - 2⁷ = 25266565039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25266565127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328123 + ... + 397740.

It is an arithmetic number, because the mean of its divisors is an integer number (2164526448).

Almost surely, 2^25266565167 is an apocalyptic number.

25266565167 is a deficient number, since it is larger than the sum of its proper divisors (9365858001).

25266565167 is a wasteful number, since it uses less digits than its factorization.

25266565167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726190.

The product of its digits is 4536000, while the sum is 51.

The spelling of 25266565167 in words is "twenty-five billion, two hundred sixty-six million, five hundred sixty-five thousand, one hundred sixty-seven".