25090234491 has 16 divisors (see below), whose sum is σ = 38248277504. Its totient is φ = 14331449664.

The previous prime is 25090234489. The next prime is 25090234501. The reversal of 25090234491 is 19443209052.

It is not a de Polignac number, because 25090234491 - 2¹ = 25090234489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25090234441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189631 + ... + 293496.

It is an arithmetic number, because the mean of its divisors is an integer number (2390517344).

Almost surely, 2^25090234491 is an apocalyptic number.

25090234491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25090234491 is a deficient number, since it is larger than the sum of its proper divisors (13158043013).

25090234491 is a wasteful number, since it uses less digits than its factorization.

25090234491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485610.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 25090234491 in words is "twenty-five billion, ninety million, two hundred thirty-four thousand, four hundred ninety-one".