25263164269 has 6 divisors (see below), whose sum is σ = 29387762574. Its totient is φ = 21654140760.

The previous prime is 25263164261. The next prime is 25263164293. The reversal of 25263164269 is 96246136252.

It can be written as a sum of positive squares in only one way, i.e., 23912601769 + 1350562500 = 154637^2 + 36750^2 .

It is not a de Polignac number, because 25263164269 - 2³ = 25263164261 is a prime.

It is a super-2 number, since 2×25263164269² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25263164261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257787342 + ... + 257787439.

It is an arithmetic number, because the mean of its divisors is an integer number (4897960429).

Almost surely, 2^25263164269 is an apocalyptic number.

It is an amenable number.

25263164269 is a deficient number, since it is larger than the sum of its proper divisors (4124598305).

25263164269 is an equidigital number, since it uses as much as digits as its factorization.

25263164269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515574795 (or 515574788 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 25263164269 in words is "twenty-five billion, two hundred sixty-three million, one hundred sixty-four thousand, two hundred sixty-nine".