25601715233 has 18 divisors (see below), whose sum is σ = 27395002278. Its totient is φ = 23843020800.

The previous prime is 25601715197. The next prime is 25601715247. The reversal of 25601715233 is 33251710652.

It can be written as a sum of positive squares in 3 ways, for example, as 22257059344 + 3344655889 = 149188^2 + 57833^2 .

It is not a de Polignac number, because 25601715233 - 2¹² = 25601711137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25601715193 and 25601715202.

It is not an unprimeable number, because it can be changed into a prime (25601715253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 99617441 + ... + 99617697.

It is an arithmetic number, because the mean of its divisors is an integer number (1521944571).

Almost surely, 2^25601715233 is an apocalyptic number.

It is an amenable number.

25601715233 is a deficient number, since it is larger than the sum of its proper divisors (1793287045).

25601715233 is an frugal number, since it uses more digits than its factorization.

25601715233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 25601715233 in words is "twenty-five billion, six hundred one million, seven hundred fifteen thousand, two hundred thirty-three".