13222220525 has 12 divisors (see below), whose sum is σ = 16640265312. Its totient is φ = 10419897840.

The previous prime is 13222220521. The next prime is 13222220551. The reversal of 13222220525 is 52502222231.

It is not a de Polignac number, because 13222220525 - 2² = 13222220521 is a prime.

It is a super-2 number, since 2×13222220525² (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 = 13222220494 and 13222220503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222220521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3945257 + ... + 3948606.

It is an arithmetic number, because the mean of its divisors is an integer number (1386688776).

Almost surely, 2^13222220525 is an apocalyptic number.

It is an amenable number.

13222220525 is a deficient number, since it is larger than the sum of its proper divisors (3418044787).

13222220525 is an equidigital number, since it uses as much as digits as its factorization.

13222220525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893940 (or 7893935 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 13222220525 its reverse (52502222231), we get a palindrome (65724442756).

The spelling of 13222220525 in words is "thirteen billion, two hundred twenty-two million, two hundred twenty thousand, five hundred twenty-five".