1317112225 has 36 divisors (see below), whose sum is σ = 1933340668. Its totient is φ = 884188800.

The previous prime is 1317112219. The next prime is 1317112271. The reversal of 1317112225 is 5222117131.

It can be written as a sum of positive squares in 6 ways, for example, as 2614689 + 1314497536 = 1617^2 + 36256^2 .

It is not a de Polignac number, because 1317112225 - 2⁹ = 1317111713 is a prime.

It is a super-2 number, since 2×1317112225² = 3469569226488901250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317112225.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22579 + ... + 56071.

Almost surely, 2^1317112225 is an apocalyptic number.

It is an amenable number.

1317112225 is a deficient number, since it is larger than the sum of its proper divisors (616228443).

1317112225 is a wasteful number, since it uses less digits than its factorization.

1317112225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33538 (or 33522 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 1317112225 is about 36292.0407940915. The cubic root of 1317112225 is about 1096.1607826285.

Adding to 1317112225 its reverse (5222117131), we get a palindrome (6539229356).

The spelling of 1317112225 in words is "one billion, three hundred seventeen million, one hundred twelve thousand, two hundred twenty-five".