72025209 has 24 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 44968320.

The previous prime is 72025207. The next prime is 72025211. The reversal of 72025209 is 90252027.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72025207) and next prime (72025211).

It is not a de Polignac number, because 72025209 - 2¹ = 72025207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72025207) 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 23 ways as a sum of consecutive naturals, for example, 33064 + ... + 35174.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^72025209 is an apocalyptic number.

It is an amenable number.

72025209 is a deficient number, since it is larger than the sum of its proper divisors (38677383).

72025209 is a wasteful number, since it uses less digits than its factorization.

72025209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 72025209 is about 8486.7666988082. The cubic root of 72025209 is about 416.0653115682.

The spelling of 72025209 in words is "seventy-two million, twenty-five thousand, two hundred nine".