71625738249 has 24 divisors (see below), whose sum is σ = 114008935040. Its totient is φ = 43052319072.

The previous prime is 71625738209. The next prime is 71625738253. The reversal of 71625738249 is 94283752617.

It is a happy number.

71625738249 is a `hidden beast` number, since 7 + 1 + 6 + 257 + 382 + 4 + 9 = 666.

It is not a de Polignac number, because 71625738249 - 2¹¹ = 71625736201 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71625738195 and 71625738204.

It is not an unprimeable number, because it can be changed into a prime (71625738209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7113409 + ... + 7123470.

Almost surely, 2^71625738249 is an apocalyptic number.

It is an amenable number.

71625738249 is a deficient number, since it is larger than the sum of its proper divisors (42383196791).

71625738249 is a wasteful number, since it uses less digits than its factorization.

71625738249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14236941 (or 14236938 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 71625738249 in words is "seventy-one billion, six hundred twenty-five million, seven hundred thirty-eight thousand, two hundred forty-nine".