312544225 has 24 divisors (see below), whose sum is σ = 443596608. Its totient is φ = 213988800.

The previous prime is 312544151. The next prime is 312544229. The reversal of 312544225 is 522445213.

It is not a de Polignac number, because 312544225 - 2⁷ = 312544097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312544193 and 312544202.

It is not an unprimeable number, because it can be changed into a prime (312544229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190107 + ... + 191743.

It is an arithmetic number, because the mean of its divisors is an integer number (18483192).

Almost surely, 2^312544225 is an apocalyptic number.

312544225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

312544225 is a deficient number, since it is larger than the sum of its proper divisors (131052383).

312544225 is a wasteful number, since it uses less digits than its factorization.

312544225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745 (or 2740 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 312544225 is about 17678.9203573069. The cubic root of 312544225 is about 678.6364146705.

Adding to 312544225 its reverse (522445213), we get a palindrome (834989438).

The spelling of 312544225 in words is "three hundred twelve million, five hundred forty-four thousand, two hundred twenty-five".