25561346315 has 16 divisors (see below), whose sum is σ = 31817854080. Its totient is φ = 19690097280.

The previous prime is 25561346303. The next prime is 25561346341. The reversal of 25561346315 is 51364316552.

It is not a de Polignac number, because 25561346315 - 2¹⁰ = 25561345291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186956 + ... + 293385.

It is an arithmetic number, because the mean of its divisors is an integer number (1988615880).

Almost surely, 2^25561346315 is an apocalyptic number.

25561346315 is a deficient number, since it is larger than the sum of its proper divisors (6256507765).

25561346315 is a wasteful number, since it uses less digits than its factorization.

25561346315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480742.

The product of its digits is 324000, while the sum is 41.

The spelling of 25561346315 in words is "twenty-five billion, five hundred sixty-one million, three hundred forty-six thousand, three hundred fifteen".