615425 has 12 divisors (see below), whose sum is σ = 773760. Its totient is φ = 485520.

The previous prime is 615413. The next prime is 615427. The reversal of 615425 is 524516.

It is a de Polignac number, because none of the positive numbers 2^k-615425 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 615425.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 615425.

It is not an unprimeable number, because it can be changed into a prime (615427) 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, 2456 + ... + 2694.

It is an arithmetic number, because the mean of its divisors is an integer number (64480).

It is a Proth number, since it is equal to 601 ⋅ 2¹⁰ + 1 and 601 < 2¹⁰.

2⁶¹⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

615425 is a deficient number, since it is larger than the sum of its proper divisors (158335).

615425 is a wasteful number, since it uses less digits than its factorization.

615425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 347 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 615425 is about 784.4902803732. The cubic root of 615425 is about 85.0599346613.

Subtracting from 615425 its reverse (524516), we obtain a palindrome (90909).

The spelling of 615425 in words is "six hundred fifteen thousand, four hundred twenty-five".