25491883822 has 16 divisors (see below), whose sum is σ = 38639149920. Its totient is φ = 12612215808.

The previous prime is 25491883799. The next prime is 25491883831. The reversal of 25491883822 is 22838819452.

It is a super-2 number, since 2×25491883822² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25491883822.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1584543 + ... + 1600549.

It is an arithmetic number, because the mean of its divisors is an integer number (2414946870).

Almost surely, 2^25491883822 is an apocalyptic number.

25491883822 is a deficient number, since it is larger than the sum of its proper divisors (13147266098).

25491883822 is a wasteful number, since it uses less digits than its factorization.

25491883822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24315.

The product of its digits is 2211840, while the sum is 52.

The spelling of 25491883822 in words is "twenty-five billion, four hundred ninety-one million, eight hundred eighty-three thousand, eight hundred twenty-two".