25222212099 has 12 divisors (see below), whose sum is σ = 41636667696. Its totient is φ = 14412692592.

The previous prime is 25222212097. The next prime is 25222212143. The reversal of 25222212099 is 99021222252.

25222212099 is a `hidden beast` number, since 2 + 522 + 2 + 2 + 120 + 9 + 9 = 666.

It is not a de Polignac number, because 25222212099 - 2¹ = 25222212097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25222212097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200176224 + ... + 200176349.

It is an arithmetic number, because the mean of its divisors is an integer number (3469722308).

Almost surely, 2^25222212099 is an apocalyptic number.

25222212099 is a deficient number, since it is larger than the sum of its proper divisors (16414455597).

25222212099 is a wasteful number, since it uses less digits than its factorization.

25222212099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400352586 (or 400352583 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 25222212099 in words is "twenty-five billion, two hundred twenty-two million, two hundred twelve thousand, ninety-nine".