72250140631 has 4 divisors (see below), whose sum is σ = 72250964200. Its totient is φ = 72249317064.

The previous prime is 72250140623. The next prime is 72250140659. The reversal of 72250140631 is 13604105227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13604105227 = 45833 ⋅296819.

It is a cyclic number.

It is not a de Polignac number, because 72250140631 - 2³ = 72250140623 is a prime.

It is a super-2 number, since 2×72250140631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72250140593 and 72250140602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72250140671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262041 + ... + 461698.

It is an arithmetic number, because the mean of its divisors is an integer number (18062741050).

Almost surely, 2^72250140631 is an apocalyptic number.

72250140631 is a deficient number, since it is larger than the sum of its proper divisors (823569).

72250140631 is an equidigital number, since it uses as much as digits as its factorization.

72250140631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823568.

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 72250140631 its reverse (13604105227), we get a palindrome (85854245858).

The spelling of 72250140631 in words is "seventy-two billion, two hundred fifty million, one hundred forty thousand, six hundred thirty-one".