3131622625 has 8 divisors (see below), whose sum is σ = 3908265192. Its totient is φ = 2505298000.

The previous prime is 3131622587. The next prime is 3131622677. The reversal of 3131622625 is 5262261313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32251041 + 3099371584 = 5679^2 + 55672^2 .

It is not a de Polignac number, because 3131622625 - 2³¹ = 984138977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12526366 + ... + 12526615.

It is an arithmetic number, because the mean of its divisors is an integer number (488533149).

Almost surely, 2^3131622625 is an apocalyptic number.

It is an amenable number.

3131622625 is a deficient number, since it is larger than the sum of its proper divisors (776642567).

3131622625 is an equidigital number, since it uses as much as digits as its factorization.

3131622625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052996 (or 25052986 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 3131622625 is about 55960.9026464013. The cubic root of 3131622625 is about 1463.0409229514.

Adding to 3131622625 its reverse (5262261313), we get a palindrome (8393883938).

The spelling of 3131622625 in words is "three billion, one hundred thirty-one million, six hundred twenty-two thousand, six hundred twenty-five".