615725 has 12 divisors (see below), whose sum is σ = 833280. Its totient is φ = 447600.

The previous prime is 615721. The next prime is 615731. The reversal of 615725 is 527516.

615725 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 615725 - 2² = 615721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 615694 and 615703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845 + ... + 1394.

It is an arithmetic number, because the mean of its divisors is an integer number (69440).

2⁶¹⁵⁷²⁵ is an apocalyptic number.

It is an amenable number.

615725 is a deficient number, since it is larger than the sum of its proper divisors (217555).

615725 is a wasteful number, since it uses less digits than its factorization.

615725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2255 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 615725 is about 784.6814640349. The cubic root of 615725 is about 85.0737537484.

Subtracting from 615725 its reverse (527516), we obtain a square (88209 = 297²).

The spelling of 615725 in words is "six hundred fifteen thousand, seven hundred twenty-five".