22352011525 has 12 divisors (see below), whose sum is σ = 27815138244. Its totient is φ = 17817968000.

The previous prime is 22352011481. The next prime is 22352011537. The reversal of 22352011525 is 52511025322.

It can be written as a sum of positive squares in 6 ways, for example, as 248945284 + 22103066241 = 15778^2 + 148671^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22352011525 is a prime.

It is a super-2 number, since 2×22352011525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22352011493 and 22352011502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1583866 + ... + 1597915.

It is an arithmetic number, because the mean of its divisors is an integer number (2317928187).

Almost surely, 2^22352011525 is an apocalyptic number.

22352011525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22352011525 is a deficient number, since it is larger than the sum of its proper divisors (5463126719).

22352011525 is a wasteful number, since it uses less digits than its factorization.

22352011525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182072 (or 3182067 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 22352011525 its reverse (52511025322), we get a palindrome (74863036847).

The spelling of 22352011525 in words is "twenty-two billion, three hundred fifty-two million, eleven thousand, five hundred twenty-five".