1312683552225 has 18 divisors (see below), whose sum is σ = 2351162096166. Its totient is φ = 700097894400.

The previous prime is 1312683552181. The next prime is 1312683552259. The reversal of 1312683552225 is 5222553862131.

1312683552225 is a `hidden beast` number, since 1 + 3 + 1 + 26 + 83 + 5 + 522 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 411497873361 + 901185678864 = 641481^2 + 949308^2 .

It is not a de Polignac number, because 1312683552225 - 2⁷ = 1312683552097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2917074336 + ... + 2917074785.

Almost surely, 2^{1312683552225} is an apocalyptic number.

1312683552225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312683552225 is a deficient number, since it is larger than the sum of its proper divisors (1038478543941).

1312683552225 is a wasteful number, since it uses less digits than its factorization.

1312683552225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834149137 (or 5834149129 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 1312683552225 in words is "one trillion, three hundred twelve billion, six hundred eighty-three million, five hundred fifty-two thousand, two hundred twenty-five".