22511531025 has 36 divisors (see below), whose sum is σ = 40474070208. Its totient is φ = 11960467680.

The previous prime is 22511531023. The next prime is 22511531027. The reversal of 22511531025 is 52013511522.

It is an interprime number because it is at equal distance from previous prime (22511531023) and next prime (22511531027).

It is not a de Polignac number, because 22511531025 - 2¹ = 22511531023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22511531025.

It is not an unprimeable number, because it can be changed into a prime (22511531023) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 131037 + ... + 249386.

It is an arithmetic number, because the mean of its divisors is an integer number (1124279728).

Almost surely, 2^22511531025 is an apocalyptic number.

22511531025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22511531025 is a deficient number, since it is larger than the sum of its proper divisors (17962539183).

22511531025 is a wasteful number, since it uses less digits than its factorization.

22511531025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380702 (or 380694 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

It can be divided in two parts, 22511 and 531025, that added together give a square (553536 = 744²).

The spelling of 22511531025 in words is "twenty-two billion, five hundred eleven million, five hundred thirty-one thousand, twenty-five".