72245825 has 6 divisors (see below), whose sum is σ = 89584854. Its totient is φ = 57796640.

The previous prime is 72245821. The next prime is 72245843. The reversal of 72245825 is 52854227.

It can be written as a sum of positive squares in 3 ways, for example, as 14348944 + 57896881 = 3788^2 + 7609^2 .

It is not a de Polignac number, because 72245825 - 2² = 72245821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72245821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1444892 + ... + 1444941.

It is an arithmetic number, because the mean of its divisors is an integer number (14930809).

Almost surely, 2^72245825 is an apocalyptic number.

It is an amenable number.

72245825 is a deficient number, since it is larger than the sum of its proper divisors (17339029).

72245825 is a wasteful number, since it uses less digits than its factorization.

72245825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889843 (or 2889838 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 72245825 is about 8499.7544082167. The cubic root of 72245825 is about 416.4896866158.

The spelling of 72245825 in words is "seventy-two million, two hundred forty-five thousand, eight hundred twenty-five".