15162212442225 has 48 divisors (see below), whose sum is σ = 25436387840000. Its totient is φ = 7968150515520.

The previous prime is 15162212442193. The next prime is 15162212442331. The reversal of 15162212442225 is 52224421226151.

It is not a de Polignac number, because 15162212442225 - 2⁵ = 15162212442193 is a prime.

It is a super-2 number, since 2×15162212442225² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 392424 + ... + 5520726.

Almost surely, 2^{15162212442225} is an apocalyptic number.

15162212442225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15162212442225 is a deficient number, since it is larger than the sum of its proper divisors (10274175397775).

15162212442225 is a wasteful number, since it uses less digits than its factorization.

15162212442225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128894 (or 5128889 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

Adding to 15162212442225 its reverse (52224421226151), we get a palindrome (67386633668376).

The spelling of 15162212442225 in words is "fifteen trillion, one hundred sixty-two billion, two hundred twelve million, four hundred forty-two thousand, two hundred twenty-five".