631511054225 has 12 divisors (see below), whose sum is σ = 783084629376. Its totient is φ = 505201796880.

The previous prime is 631511054171. The next prime is 631511054231. The reversal of 631511054225 is 522450115136.

It is not a de Polignac number, because 631511054225 - 2¹⁴ = 631511037841 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2378504 + ... + 2630646.

It is an arithmetic number, because the mean of its divisors is an integer number (65257052448).

Almost surely, 2^631511054225 is an apocalyptic number.

It is an amenable number.

631511054225 is a deficient number, since it is larger than the sum of its proper divisors (151573575151).

631511054225 is a wasteful number, since it uses less digits than its factorization.

631511054225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352336 (or 352331 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 631511054225 in words is "six hundred thirty-one billion, five hundred eleven million, fifty-four thousand, two hundred twenty-five".