312541225 has 18 divisors (see below), whose sum is σ = 400486830. Its totient is φ = 241948800.

The previous prime is 312541223. The next prime is 312541249. The reversal of 312541225 is 522145213.

It can be written as a sum of positive squares in 3 ways, for example, as 2499561 + 310041664 = 1581^2 + 17608^2 .

It is not a de Polignac number, because 312541225 - 2¹ = 312541223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 312541225.

It is not an unprimeable number, because it can be changed into a prime (312541223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17521 + ... + 30529.

Almost surely, 2^312541225 is an apocalyptic number.

It is an amenable number.

312541225 is a deficient number, since it is larger than the sum of its proper divisors (87945605).

312541225 is a wasteful number, since it uses less digits than its factorization.

312541225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13081 (or 13045 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 312541225 is about 17678.8355102931. The cubic root of 312541225 is about 678.6342433343.

Adding to 312541225 its reverse (522145213), we get a palindrome (834686438).

The spelling of 312541225 in words is "three hundred twelve million, five hundred forty-one thousand, two hundred twenty-five".