72425849 has 4 divisors (see below), whose sum is σ = 73613220. Its totient is φ = 71238480.

The previous prime is 72425833. The next prime is 72425867. The reversal of 72425849 is 94852427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94852427 = 19 ⋅4992233.

It can be written as a sum of positive squares in 2 ways, for example, as 30913600 + 41512249 = 5560^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 72425849 - 2⁴ = 72425833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72425879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593594 + ... + 593715.

It is an arithmetic number, because the mean of its divisors is an integer number (18403305).

Almost surely, 2^72425849 is an apocalyptic number.

It is an amenable number.

72425849 is a deficient number, since it is larger than the sum of its proper divisors (1187371).

72425849 is a wasteful number, since it uses less digits than its factorization.

72425849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187370.

The product of its digits is 161280, while the sum is 41.

The square root of 72425849 is about 8510.3377723801. The cubic root of 72425849 is about 416.8353395673.

The spelling of 72425849 in words is "seventy-two million, four hundred twenty-five thousand, eight hundred forty-nine".