25942419899 has 48 divisors (see below), whose sum is σ = 30510089856. Its totient is φ = 21867753600.

The previous prime is 25942419889. The next prime is 25942419929. The reversal of 25942419899 is 99891424952.

It is a de Polignac number, because none of the positive numbers 2^k-25942419899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25942419859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74761844 + ... + 74762190.

It is an arithmetic number, because the mean of its divisors is an integer number (635626872).

Almost surely, 2^25942419899 is an apocalyptic number.

25942419899 is a deficient number, since it is larger than the sum of its proper divisors (4567669957).

25942419899 is a wasteful number, since it uses less digits than its factorization.

25942419899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 725 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 62.

The spelling of 25942419899 in words is "twenty-five billion, nine hundred forty-two million, four hundred nineteen thousand, eight hundred ninety-nine".