515029994225 has 12 divisors (see below), whose sum is σ = 638646093900. Its totient is φ = 412018252800.

The previous prime is 515029994209. The next prime is 515029994231. The reversal of 515029994225 is 522499920515.

It can be written as a sum of positive squares in 6 ways, for example, as 8530184881 + 506499809344 = 92359^2 + 711688^2 .

It is not a de Polignac number, because 515029994225 - 2⁴ = 515029994209 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3437885 + ... + 3584565.

It is an arithmetic number, because the mean of its divisors is an integer number (53220507825).

Almost surely, 2^515029994225 is an apocalyptic number.

It is an amenable number.

515029994225 is a deficient number, since it is larger than the sum of its proper divisors (123616099675).

515029994225 is a wasteful number, since it uses less digits than its factorization.

515029994225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287140 (or 287135 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 53.

The spelling of 515029994225 in words is "five hundred fifteen billion, twenty-nine million, nine hundred ninety-four thousand, two hundred twenty-five".