312002020420225 has 12 divisors (see below), whose sum is σ = 386895736146096. Its totient is φ = 249593080320080.

The previous prime is 312002020420133. The next prime is 312002020420243. The reversal of 312002020420225 is 522024020200213.

It is not a de Polignac number, because 312002020420225 - 2²³ = 312002012031617 is a prime.

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 312002020420225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212654707 + ... + 214116856.

It is an arithmetic number, because the mean of its divisors is an integer number (32241311345508).

Almost surely, 2^{312002020420225} is an apocalyptic number.

It is an amenable number.

312002020420225 is a deficient number, since it is larger than the sum of its proper divisors (74893715725871).

312002020420225 is a wasteful number, since it uses less digits than its factorization.

312002020420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426800816 (or 426800811 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 312002020420225 its reverse (522024020200213), we get a palindrome (834026040620438).

The spelling of 312002020420225 in words is "three hundred twelve trillion, two billion, twenty million, four hundred twenty thousand, two hundred twenty-five".