22155003625 has 16 divisors (see below), whose sum is σ = 27960126480. Its totient is φ = 17524848000.

The previous prime is 22155003613. The next prime is 22155003631. The reversal of 22155003625 is 52630055122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13370065641 + 8784937984 = 115629^2 + 93728^2 .

It is not a de Polignac number, because 22155003625 - 2⁵ = 22155003593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984606 + ... + 1006855.

It is an arithmetic number, because the mean of its divisors is an integer number (1747507905).

Almost surely, 2^22155003625 is an apocalyptic number.

22155003625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22155003625 is a deficient number, since it is larger than the sum of its proper divisors (5805122855).

22155003625 is an equidigital number, since it uses as much as digits as its factorization.

22155003625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991565 (or 1991555 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 22155003625 its reverse (52630055122), we get a palindrome (74785058747).

The spelling of 22155003625 in words is "twenty-two billion, one hundred fifty-five million, three thousand, six hundred twenty-five".