25245407163263 has 24 divisors (see below), whose sum is σ = 29705198602752. Its totient is φ = 21391030027584.

The previous prime is 25245407163257. The next prime is 25245407163283. The reversal of 25245407163263 is 36236170454252.

It is not a de Polignac number, because 25245407163263 - 2²⁶ = 25245340054399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245407163283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5598956 + ... + 9046497.

It is an arithmetic number, because the mean of its divisors is an integer number (1237716608448).

Almost surely, 2^{25245407163263} is an apocalyptic number.

25245407163263 is a deficient number, since it is larger than the sum of its proper divisors (4459791439489).

25245407163263 is a wasteful number, since it uses less digits than its factorization.

25245407163263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14645871 (or 14645864 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 50.

The spelling of 25245407163263 in words is "twenty-five trillion, two hundred forty-five billion, four hundred seven million, one hundred sixty-three thousand, two hundred sixty-three".