3121235225 has 6 divisors (see below), whose sum is σ = 3870331710. Its totient is φ = 2496988160.

The previous prime is 3121235209. The next prime is 3121235297. The reversal of 3121235225 is 5225321213.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 881674249 + 2239560976 = 29693^2 + 47324^2 .

It is not a de Polignac number, because 3121235225 - 2⁴ = 3121235209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121235194 and 3121235203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62424680 + ... + 62424729.

It is an arithmetic number, because the mean of its divisors is an integer number (645055285).

Almost surely, 2^3121235225 is an apocalyptic number.

It is an amenable number.

3121235225 is a deficient number, since it is larger than the sum of its proper divisors (749096485).

3121235225 is a wasteful number, since it uses less digits than its factorization.

3121235225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124849419 (or 124849414 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 3121235225 is about 55868.0161183481. The cubic root of 3121235225 is about 1461.4215255065.

Adding to 3121235225 its reverse (5225321213), we get a palindrome (8346556438).

The spelling of 3121235225 in words is "three billion, one hundred twenty-one million, two hundred thirty-five thousand, two hundred twenty-five".