515150225 has 6 divisors (see below), whose sum is σ = 638786310. Its totient is φ = 412120160.

The previous prime is 515150161. The next prime is 515150239. The reversal of 515150225 is 522051515.

It can be written as a sum of positive squares in 3 ways, for example, as 8720209 + 506430016 = 2953^2 + 22504^2 .

It is not a de Polignac number, because 515150225 - 2⁶ = 515150161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 515150194 and 515150203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10302980 + ... + 10303029.

It is an arithmetic number, because the mean of its divisors is an integer number (106464385).

Almost surely, 2^515150225 is an apocalyptic number.

It is an amenable number.

515150225 is a deficient number, since it is larger than the sum of its proper divisors (123636085).

515150225 is a wasteful number, since it uses less digits than its factorization.

515150225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20606019 (or 20606014 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 515150225 is about 22696.9210466971. The cubic root of 515150225 is about 801.6373885993.

The spelling of 515150225 in words is "five hundred fifteen million, one hundred fifty thousand, two hundred twenty-five".