22215140125 has 32 divisors (see below), whose sum is σ = 28438581600. Its totient is φ = 17319744000.

The previous prime is 22215140093. The next prime is 22215140147. The reversal of 22215140125 is 52104151222.

It can be written as a sum of positive squares in 16 ways, for example, as 18171579204 + 4043560921 = 134802^2 + 63589^2 .

It is not a de Polignac number, because 22215140125 - 2⁵ = 22215140093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 22215140125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817761 + ... + 844489.

It is an arithmetic number, because the mean of its divisors is an integer number (888705675).

Almost surely, 2^22215140125 is an apocalyptic number.

22215140125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22215140125 is a deficient number, since it is larger than the sum of its proper divisors (6223441475).

22215140125 is a wasteful number, since it uses less digits than its factorization.

22215140125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914 (or 26904 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 22215140125 its reverse (52104151222), we get a palindrome (74319291347).

The spelling of 22215140125 in words is "twenty-two billion, two hundred fifteen million, one hundred forty thousand, one hundred twenty-five".