25505899215325 has 48 divisors (see below), whose sum is σ = 33341610107520. Its totient is φ = 19301944273920.

The previous prime is 25505899215263. The next prime is 25505899215353. The reversal of 25505899215325 is 52351299850552.

It is not a de Polignac number, because 25505899215325 - 2²¹ = 25505897118173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1533443209 + ... + 1533459841.

It is an arithmetic number, because the mean of its divisors is an integer number (694616877240).

Almost surely, 2^{25505899215325} is an apocalyptic number.

25505899215325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25505899215325 is a deficient number, since it is larger than the sum of its proper divisors (7835710892195).

25505899215325 is a wasteful number, since it uses less digits than its factorization.

25505899215325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21286 (or 21281 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 61.

The spelling of 25505899215325 in words is "twenty-five trillion, five hundred five billion, eight hundred ninety-nine million, two hundred fifteen thousand, three hundred twenty-five".