1312111522225 has 48 divisors (see below), whose sum is σ = 1886172134400. Its totient is φ = 886810478400.

The previous prime is 1312111522213. The next prime is 1312111522289. The reversal of 1312111522225 is 5222251112131.

It is not a de Polignac number, because 1312111522225 - 2¹¹ = 1312111520177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312111522193 and 1312111522202.

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, 50917194 + ... + 50942956.

It is an arithmetic number, because the mean of its divisors is an integer number (39295252800).

Almost surely, 2^{1312111522225} is an apocalyptic number.

It is an amenable number.

1312111522225 is a deficient number, since it is larger than the sum of its proper divisors (574060612175).

1312111522225 is a wasteful number, since it uses less digits than its factorization.

1312111522225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29950 (or 29945 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

Adding to 1312111522225 its reverse (5222251112131), we get a palindrome (6534362634356).

The spelling of 1312111522225 in words is "one trillion, three hundred twelve billion, one hundred eleven million, five hundred twenty-two thousand, two hundred twenty-five".