61255250631 has 6 divisors (see below), whose sum is σ = 88479806480. Its totient is φ = 40836833748.

The previous prime is 61255250603. The next prime is 61255250669. The reversal of 61255250631 is 13605255216.

61255250631 is a `hidden beast` number, since 6 + 12 + 5 + 5 + 2 + 5 + 0 + 631 = 666.

61255250631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61255250631 - 2¹⁰ = 61255249607 is a prime.

It is a super-2 number, since 2×61255250631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61255250681) 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, 3403069471 + ... + 3403069488.

Almost surely, 2^61255250631 is an apocalyptic number.

61255250631 is a deficient number, since it is larger than the sum of its proper divisors (27224555849).

61255250631 is a wasteful number, since it uses less digits than its factorization.

61255250631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806138965 (or 6806138962 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 61255250631 in words is "sixty-one billion, two hundred fifty-five million, two hundred fifty thousand, six hundred thirty-one".