316261231605025 has 144 divisors (see below), whose sum is σ = 466016007280896. Its totient is φ = 208523808276480.

The previous prime is 316261231605017. The next prime is 316261231605071. The reversal of 316261231605025 is 520506132162613.

It is not a de Polignac number, because 316261231605025 - 2³ = 316261231605017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7252511772 + ... + 7252555378.

It is an arithmetic number, because the mean of its divisors is an integer number (3236222272784).

Almost surely, 2^{316261231605025} is an apocalyptic number.

316261231605025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

316261231605025 is a deficient number, since it is larger than the sum of its proper divisors (149754775675871).

316261231605025 is a wasteful number, since it uses less digits than its factorization.

316261231605025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44048 (or 43996 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

Adding to 316261231605025 its reverse (520506132162613), we get a palindrome (836767363767638).

The spelling of 316261231605025 in words is "three hundred sixteen trillion, two hundred sixty-one billion, two hundred thirty-one million, six hundred five thousand, twenty-five".