72425636 has 12 divisors (see below), whose sum is σ = 128481612. Its totient is φ = 35716608.

The previous prime is 72425623. The next prime is 72425651. The reversal of 72425636 is 63652427.

It can be written as a sum of positive squares in 2 ways, for example, as 60217600 + 12208036 = 7760^2 + 3494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72425596 and 72425605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123725 + ... + 124308.

It is an arithmetic number, because the mean of its divisors is an integer number (10706801).

Almost surely, 2^72425636 is an apocalyptic number.

It is an amenable number.

72425636 is a deficient number, since it is larger than the sum of its proper divisors (56055976).

72425636 is a wasteful number, since it uses less digits than its factorization.

72425636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248110 (or 248108 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 72425636 is about 8510.3252581790. The cubic root of 72425636 is about 416.8349309378.

The spelling of 72425636 in words is "seventy-two million, four hundred twenty-five thousand, six hundred thirty-six".