72225407 has 2 divisors, whose sum is σ = 72225408. Its totient is φ = 72225406.

The previous prime is 72225343. The next prime is 72225421. The reversal of 72225407 is 70452227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72225407 - 2⁶ = 72225343 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72225407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72225607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36112703 + 36112704.

It is an arithmetic number, because the mean of its divisors is an integer number (36112704).

Almost surely, 2^72225407 is an apocalyptic number.

72225407 is a deficient number, since it is larger than the sum of its proper divisors (1).

72225407 is an equidigital number, since it uses as much as digits as its factorization.

72225407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72225407 is about 8498.5532298151. The cubic root of 72225407 is about 416.4504470350.

The spelling of 72225407 in words is "seventy-two million, two hundred twenty-five thousand, four hundred seven".