631601263025 has 12 divisors (see below), whose sum is σ = 784994322252. Its totient is φ = 504114071040.

The previous prime is 631601263009. The next prime is 631601263049. The reversal of 631601263025 is 520362106136.

631601263025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 130055439424 + 501545823601 = 360632^2 + 708199^2 .

It is not a de Polignac number, because 631601263025 - 2⁴ = 631601263009 is a prime.

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, 29162444 + ... + 29184093.

It is an arithmetic number, because the mean of its divisors is an integer number (65416193521).

Almost surely, 2^631601263025 is an apocalyptic number.

It is an amenable number.

631601263025 is a deficient number, since it is larger than the sum of its proper divisors (153393059227).

631601263025 is a wasteful number, since it uses less digits than its factorization.

631601263025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58346980 (or 58346975 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 631601263025 in words is "six hundred thirty-one billion, six hundred one million, two hundred sixty-three thousand, twenty-five".