225151515 has 16 divisors (see below), whose sum is σ = 400269600. Its totient is φ = 120080736.

The previous prime is 225151429. The next prime is 225151567. The reversal of 225151515 is 515151522.

It is not a de Polignac number, because 225151515 - 2¹⁰ = 225150491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

225151515 is a modest number, since divided by 151515 gives 225 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833760 + ... + 834029.

It is an arithmetic number, because the mean of its divisors is an integer number (25016850).

Almost surely, 2^225151515 is an apocalyptic number.

225151515 is a deficient number, since it is larger than the sum of its proper divisors (175118085).

225151515 is a wasteful number, since it uses less digits than its factorization.

225151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667803 (or 1667797 counting only the distinct ones).

The product of its digits is 2500, while the sum is 27.

The square root of 225151515 is about 15005.0496500345. The cubic root of 225151515 is about 608.3566940842.

The spelling of 225151515 in words is "two hundred twenty-five million, one hundred fifty-one thousand, five hundred fifteen".