615225 has 24 divisors (see below), whose sum is σ = 1097152. Its totient is φ = 302400.

The previous prime is 615187. The next prime is 615229. The reversal of 615225 is 522516.

615225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 615225 - 2⁶ = 615161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660 + ... + 1290.

2⁶¹⁵²²⁵ is an apocalyptic number.

615225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

615225 is a deficient number, since it is larger than the sum of its proper divisors (481927).

615225 is a wasteful number, since it uses less digits than its factorization.

615225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 652 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 615225 is about 784.3627987099. The cubic root of 615225 is about 85.0507194414.

The spelling of 615225 in words is "six hundred fifteen thousand, two hundred twenty-five".