25325458515 has 64 divisors (see below), whose sum is σ = 51676185600. Its totient is φ = 11527564032.

The previous prime is 25325458513. The next prime is 25325458523. The reversal of 25325458515 is 51585452352.

25325458515 is a `hidden beast` number, since 2 + 5 + 3 + 2 + 54 + 585 + 15 = 666.

It is not a de Polignac number, because 25325458515 - 2¹ = 25325458513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (25325458513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162676 + ... + 277694.

It is an arithmetic number, because the mean of its divisors is an integer number (807440400).

Almost surely, 2^25325458515 is an apocalyptic number.

25325458515 is an abundant number, since it is smaller than the sum of its proper divisors (26350727085).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25325458515 is a wasteful number, since it uses less digits than its factorization.

25325458515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115273 (or 115267 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The spelling of 25325458515 in words is "twenty-five billion, three hundred twenty-five million, four hundred fifty-eight thousand, five hundred fifteen".