25173892461 has 16 divisors (see below), whose sum is σ = 33931047744. Its totient is φ = 16600149504.

The previous prime is 25173892423. The next prime is 25173892463. The reversal of 25173892461 is 16429837152.

It is not a de Polignac number, because 25173892461 - 2³⁴ = 7994023277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25173892461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25173892463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149565 + ... + 269661.

It is an arithmetic number, because the mean of its divisors is an integer number (2120690484).

Almost surely, 2^25173892461 is an apocalyptic number.

It is an amenable number.

25173892461 is a deficient number, since it is larger than the sum of its proper divisors (8757155283).

25173892461 is a wasteful number, since it uses less digits than its factorization.

25173892461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120860.

The product of its digits is 725760, while the sum is 48.

The spelling of 25173892461 in words is "twenty-five billion, one hundred seventy-three million, eight hundred ninety-two thousand, four hundred sixty-one".