631133252225 has 24 divisors (see below), whose sum is σ = 947018101248. Its totient is φ = 407319609600.

The previous prime is 631133252213. The next prime is 631133252227. The reversal of 631133252225 is 522252331136.

It is not a de Polignac number, because 631133252225 - 2¹⁶ = 631133186689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631133252227) 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, 106069841 + ... + 106075790.

It is an arithmetic number, because the mean of its divisors is an integer number (39459087552).

Almost surely, 2^631133252225 is an apocalyptic number.

It is an amenable number.

631133252225 is a deficient number, since it is larger than the sum of its proper divisors (315884849023).

631133252225 is a wasteful number, since it uses less digits than its factorization.

631133252225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212145665 (or 212145660 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The spelling of 631133252225 in words is "six hundred thirty-one billion, one hundred thirty-three million, two hundred fifty-two thousand, two hundred twenty-five".