25504673091 has 16 divisors (see below), whose sum is σ = 34912373760. Its totient is φ = 16554942560.

The previous prime is 25504673069. The next prime is 25504673099. The reversal of 25504673091 is 19037640552.

It is a cyclic number.

It is not a de Polignac number, because 25504673091 - 2²⁶ = 25437564227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25504673099) 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 15 ways as a sum of consecutive naturals, for example, 591411 + ... + 633068.

It is an arithmetic number, because the mean of its divisors is an integer number (2182023360).

Almost surely, 2^25504673091 is an apocalyptic number.

25504673091 is a deficient number, since it is larger than the sum of its proper divisors (9407700669).

25504673091 is a wasteful number, since it uses less digits than its factorization.

25504673091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224666.

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 25504673091 in words is "twenty-five billion, five hundred four million, six hundred seventy-three thousand, ninety-one".