63125631 has 12 divisors (see below), whose sum is σ = 91274040. Its totient is φ = 42041040.

The previous prime is 63125617. The next prime is 63125633. The reversal of 63125631 is 13652136.

63125631 is a `hidden beast` number, since 6 + 3 + 1 + 25 + 631 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-63125631 is a prime.

It is a super-2 number, since 2×63125631² = 7969690578296322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 63125595 and 63125604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63125633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7660 + ... + 13598.

It is an arithmetic number, because the mean of its divisors is an integer number (7606170).

Almost surely, 2^63125631 is an apocalyptic number.

63125631 is a deficient number, since it is larger than the sum of its proper divisors (28148409).

63125631 is a wasteful number, since it uses less digits than its factorization.

63125631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126 (or 7123 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 63125631 is about 7945.1640008247. The cubic root of 63125631 is about 398.1700387884.

Adding to 63125631 its reverse (13652136), we get a palindrome (76777767).

It can be divided in two parts, 631 and 25631, that added together give a palindrome (26262).

The spelling of 63125631 in words is "sixty-three million, one hundred twenty-five thousand, six hundred thirty-one".