25496871312625 has 8 divisors (see below), whose sum is σ = 31820095398312. Its totient is φ = 20397497050000.

The previous prime is 25496871312611. The next prime is 25496871312637. The reversal of 25496871312625 is 52621317869452.

It can be written as a sum of positive squares in 4 ways, for example, as 2624153765776 + 22872717546849 = 1619924^2 + 4782543^2 .

It is not a de Polignac number, because 25496871312625 - 2¹⁵ = 25496871279857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101987485126 + ... + 101987485375.

It is an arithmetic number, because the mean of its divisors is an integer number (3977511924789).

Almost surely, 2^{25496871312625} is an apocalyptic number.

25496871312625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25496871312625 is a deficient number, since it is larger than the sum of its proper divisors (6323224085687).

25496871312625 is an equidigital number, since it uses as much as digits as its factorization.

25496871312625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203974970516 (or 203974970506 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 61.

The spelling of 25496871312625 in words is "twenty-five trillion, four hundred ninety-six billion, eight hundred seventy-one million, three hundred twelve thousand, six hundred twenty-five".