315221011025 has 12 divisors (see below), whose sum is σ = 390988684572. Its totient is φ = 252102853440.

The previous prime is 315221010989. The next prime is 315221011033. The reversal of 315221011025 is 520110122513.

It can be written as a sum of positive squares in 6 ways, for example, as 51478164544 + 263742846481 = 226888^2 + 513559^2 .

It is not a de Polignac number, because 315221011025 - 2⁶ = 315221010961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1761854 + ... + 1932503.

It is an arithmetic number, because the mean of its divisors is an integer number (32582390381).

Almost surely, 2^315221011025 is an apocalyptic number.

It is an amenable number.

315221011025 is a deficient number, since it is larger than the sum of its proper divisors (75767673547).

315221011025 is a wasteful number, since it uses less digits than its factorization.

315221011025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697780 (or 3697775 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 315221011025 its reverse (520110122513), we get a palindrome (835331133538).

The spelling of 315221011025 in words is "three hundred fifteen billion, two hundred twenty-one million, eleven thousand, twenty-five".