72500419 has 4 divisors (see below), whose sum is σ = 73247944. Its totient is φ = 71752896.

The previous prime is 72500401. The next prime is 72500429. The reversal of 72500419 is 91400527.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91400527 = 1873 ⋅48799.

It is a cyclic number.

It is not a de Polignac number, because 72500419 - 2⁵ = 72500387 is a prime.

It is a super-3 number, since 3×72500419³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72500429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373617 + ... + 373810.

It is an arithmetic number, because the mean of its divisors is an integer number (18311986).

Almost surely, 2^72500419 is an apocalyptic number.

72500419 is a deficient number, since it is larger than the sum of its proper divisors (747525).

72500419 is an equidigital number, since it uses as much as digits as its factorization.

72500419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747524.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 72500419 is about 8514.7177874548. The cubic root of 72500419 is about 416.9783490495.

The spelling of 72500419 in words is "seventy-two million, five hundred thousand, four hundred nineteen".