225211515 has 16 divisors (see below), whose sum is σ = 376005888. Its totient is φ = 114890336.

The previous prime is 225211501. The next prime is 225211523. The reversal of 225211515 is 515112522.

It is not a de Polignac number, because 225211515 - 2¹³ = 225203323 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 326049 + ... + 326738.

It is an arithmetic number, because the mean of its divisors is an integer number (23500368).

Almost surely, 2^225211515 is an apocalyptic number.

225211515 is a deficient number, since it is larger than the sum of its proper divisors (150794373).

225211515 is a wasteful number, since it uses less digits than its factorization.

225211515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652818.

The product of its digits is 1000, while the sum is 24.

The square root of 225211515 is about 15007.0488437934. The cubic root of 225211515 is about 608.4107290449.

The spelling of 225211515 in words is "two hundred twenty-five million, two hundred eleven thousand, five hundred fifteen".