631205630461325 has 6 divisors (see below), whose sum is σ = 782694981772074. Its totient is φ = 504964504369040.

The previous prime is 631205630461313. The next prime is 631205630461327. The reversal of 631205630461325 is 523164036502136.

It can be written as a sum of positive squares in 3 ways, for example, as 121044400072324 + 510161230389001 = 11002018^2 + 22586749^2 .

It is not a de Polignac number, because 631205630461325 - 2⁶ = 631205630461261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631205630461325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631205630461327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12624112609202 + ... + 12624112609251.

It is an arithmetic number, because the mean of its divisors is an integer number (130449163628679).

Almost surely, 2^{631205630461325} is an apocalyptic number.

It is an amenable number.

631205630461325 is a deficient number, since it is larger than the sum of its proper divisors (151489351310749).

631205630461325 is a wasteful number, since it uses less digits than its factorization.

631205630461325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25248225218463 (or 25248225218458 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 631205630461325 in words is "six hundred thirty-one trillion, two hundred five billion, six hundred thirty million, four hundred sixty-one thousand, three hundred twenty-five".