25221422116 has 12 divisors (see below), whose sum is σ = 48149987760. Its totient is φ = 11464282760.

The previous prime is 25221422101. The next prime is 25221422147. The reversal of 25221422116 is 61122412252.

It is a happy number.

It is a super-2 number, since 2×25221422116² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286607026 + ... + 286607113.

It is an arithmetic number, because the mean of its divisors is an integer number (4012498980).

Almost surely, 2^25221422116 is an apocalyptic number.

It is an amenable number.

25221422116 is a deficient number, since it is larger than the sum of its proper divisors (22928565644).

25221422116 is a wasteful number, since it uses less digits than its factorization.

25221422116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573214154 (or 573214152 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 25221422116 its reverse (61122412252), we get a palindrome (86343834368).

The spelling of 25221422116 in words is "twenty-five billion, two hundred twenty-one million, four hundred twenty-two thousand, one hundred sixteen".