72400259 has 2 divisors, whose sum is σ = 72400260. Its totient is φ = 72400258.

The previous prime is 72400247. The next prime is 72400357. The reversal of 72400259 is 95200427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72400259 - 2⁴ = 72400243 is a prime.

It is not a weakly prime, because it can be changed into another prime (72400859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36200129 + 36200130.

It is an arithmetic number, because the mean of its divisors is an integer number (36200130).

Almost surely, 2^72400259 is an apocalyptic number.

72400259 is a deficient number, since it is larger than the sum of its proper divisors (1).

72400259 is an equidigital number, since it uses as much as digits as its factorization.

72400259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 72400259 is about 8508.8341739630. The cubic root of 72400259 is about 416.7862407394.

The spelling of 72400259 in words is "seventy-two million, four hundred thousand, two hundred fifty-nine".