72245025 has 36 divisors (see below), whose sum is σ = 129856272. Its totient is φ = 38394720.

The previous prime is 72245021. The next prime is 72245027. The reversal of 72245025 is 52054227.

It is not a de Polignac number, because 72245025 - 2² = 72245021 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72245025.

It is not an unprimeable number, because it can be changed into a prime (72245021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 122782 + ... + 123368.

Almost surely, 2^72245025 is an apocalyptic number.

72245025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72245025 is a deficient number, since it is larger than the sum of its proper divisors (57611247).

72245025 is a wasteful number, since it uses less digits than its factorization.

72245025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 72245025 is about 8499.7073479032. The cubic root of 72245025 is about 416.4881493044.

The spelling of 72245025 in words is "seventy-two million, two hundred forty-five thousand, twenty-five".