25573104261 has 12 divisors (see below), whose sum is σ = 37039584192. Its totient is φ = 17002279656.

The previous prime is 25573104259. The next prime is 25573104313. The reversal of 25573104261 is 16240137552.

25573104261 is a `hidden beast` number, since 2 + 557 + 3 + 1 + 0 + 42 + 61 = 666.

It is not a de Polignac number, because 25573104261 - 2¹ = 25573104259 is a prime.

It is a super-2 number, since 2×25573104261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25573104061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3867891 + ... + 3874496.

It is an arithmetic number, because the mean of its divisors is an integer number (3086632016).

Almost surely, 2^25573104261 is an apocalyptic number.

It is an amenable number.

25573104261 is a deficient number, since it is larger than the sum of its proper divisors (11466479931).

25573104261 is a wasteful number, since it uses less digits than its factorization.

25573104261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742760 (or 7742757 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 25573104261 in words is "twenty-five billion, five hundred seventy-three million, one hundred four thousand, two hundred sixty-one".