225016615 has 4 divisors (see below), whose sum is σ = 270019944. Its totient is φ = 180013288.

The previous prime is 225016553. The next prime is 225016621. The reversal of 225016615 is 516610522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 516610522 = 2 ⋅258305261.

It is a cyclic number.

It is not a de Polignac number, because 225016615 - 2¹³ = 225008423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22501657 + ... + 22501666.

It is an arithmetic number, because the mean of its divisors is an integer number (67504986).

Almost surely, 2^225016615 is an apocalyptic number.

225016615 is a deficient number, since it is larger than the sum of its proper divisors (45003329).

225016615 is an equidigital number, since it uses as much as digits as its factorization.

225016615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45003328.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 225016615 is about 15000.5538231093. The cubic root of 225016615 is about 608.2351704164.

The spelling of 225016615 in words is "two hundred twenty-five million, sixteen thousand, six hundred fifteen".