22513004225 has 12 divisors (see below), whose sum is σ = 27926365500. Its totient is φ = 18003796800.

The previous prime is 22513004209. The next prime is 22513004243. The reversal of 22513004225 is 52240031522.

It can be written as a sum of positive squares in 6 ways, for example, as 295014976 + 22217989249 = 17176^2 + 149057^2 .

It is not a de Polignac number, because 22513004225 - 2⁴ = 22513004209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22513004194 and 22513004203.

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, 95066 + ... + 232515.

It is an arithmetic number, because the mean of its divisors is an integer number (2327197125).

Almost surely, 2^22513004225 is an apocalyptic number.

22513004225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22513004225 is a deficient number, since it is larger than the sum of its proper divisors (5413361275).

22513004225 is a wasteful number, since it uses less digits than its factorization.

22513004225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330340 (or 330335 counting only the distinct ones).

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

Adding to 22513004225 its reverse (52240031522), we get a palindrome (74753035747).

The spelling of 22513004225 in words is "twenty-two billion, five hundred thirteen million, four thousand, two hundred twenty-five".