515043225 has 24 divisors (see below), whose sum is σ = 946154720. Its totient is φ = 274689360.

The previous prime is 515043181. The next prime is 515043227. The reversal of 515043225 is 522340515.

It is a happy number.

It is not a de Polignac number, because 515043225 - 2¹⁸ = 514781081 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (515043227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380839 + ... + 382188.

Almost surely, 2^515043225 is an apocalyptic number.

It is an amenable number.

515043225 is a deficient number, since it is larger than the sum of its proper divisors (431111495).

515043225 is a wasteful number, since it uses less digits than its factorization.

515043225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763046 (or 763035 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 515043225 is about 22694.5637763761. The cubic root of 515043225 is about 801.5818830168.

The spelling of 515043225 in words is "five hundred fifteen million, forty-three thousand, two hundred twenty-five".