25409716194 has 16 divisors (see below), whose sum is σ = 50820994368. Its totient is φ = 8469645072.

The previous prime is 25409716193. The next prime is 25409716243. The reversal of 25409716194 is 49161790452.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25409716193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352459 + ... + 418385.

It is an arithmetic number, because the mean of its divisors is an integer number (3176312148).

Almost surely, 2^25409716194 is an apocalyptic number.

25409716194 is an abundant number, since it is smaller than the sum of its proper divisors (25411278174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25409716194 is a wasteful number, since it uses less digits than its factorization.

25409716194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130169.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 25409716194 in words is "twenty-five billion, four hundred nine million, seven hundred sixteen thousand, one hundred ninety-four".