25245716315 has 4 divisors (see below), whose sum is σ = 30294859584. Its totient is φ = 20196573048.

The previous prime is 25245716311. The next prime is 25245716341. The reversal of 25245716315 is 51361754252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25245716315 - 2² = 25245716311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25245716311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524571627 + ... + 2524571636.

It is an arithmetic number, because the mean of its divisors is an integer number (7573714896).

Almost surely, 2^25245716315 is an apocalyptic number.

25245716315 is a deficient number, since it is larger than the sum of its proper divisors (5049143269).

25245716315 is an equidigital number, since it uses as much as digits as its factorization.

25245716315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049143268.

The product of its digits is 252000, while the sum is 41.

The spelling of 25245716315 in words is "twenty-five billion, two hundred forty-five million, seven hundred sixteen thousand, three hundred fifteen".