72849225031 has 32 divisors (see below), whose sum is σ = 83764224000. Its totient is φ = 63276127200.

The previous prime is 72849225019. The next prime is 72849225037. The reversal of 72849225031 is 13052294827.

It is not a de Polignac number, because 72849225031 - 2¹⁷ = 72849093959 is a prime.

It is a super-2 number, since 2×72849225031² (a number of 23 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 (72849225037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3248445 + ... + 3270793.

It is an arithmetic number, because the mean of its divisors is an integer number (2617632000).

Almost surely, 2^72849225031 is an apocalyptic number.

72849225031 is a deficient number, since it is larger than the sum of its proper divisors (10914998969).

72849225031 is a wasteful number, since it uses less digits than its factorization.

72849225031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492 (or 22470 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 72849225031 in words is "seventy-two billion, eight hundred forty-nine million, two hundred twenty-five thousand, thirty-one".