72297625842 has 56 divisors (see below), whose sum is σ = 175102652844. Its totient is φ = 22245417504.

The previous prime is 72297625837. The next prime is 72297625843. The reversal of 72297625842 is 24852679227.

72297625842 is a `hidden beast` number, since 7 + 2 + 2 + 9 + 7 + 625 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51843191481 + 20454434361 = 227691^2 + 143019^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (72297625843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1888233 + ... + 1926140.

Almost surely, 2^72297625842 is an apocalyptic number.

72297625842 is an abundant number, since it is smaller than the sum of its proper divisors (102805027002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72297625842 is a wasteful number, since it uses less digits than its factorization.

72297625842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814406 (or 3814391 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 72297625842 in words is "seventy-two billion, two hundred ninety-seven million, six hundred twenty-five thousand, eight hundred forty-two".