617425 has 6 divisors (see below), whose sum is σ = 765638. Its totient is φ = 493920.

The previous prime is 617411. The next prime is 617429. The reversal of 617425 is 524716.

It can be written as a sum of positive squares in 3 ways, for example, as 153664 + 463761 = 392^2 + 681^2 .

It is not a de Polignac number, because 617425 - 2¹³ = 609233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 24697 = 617425 / (6 + 1 + 7 + 4 + 2 + 5).

It is a Duffinian number.

617425 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 617425.

It is not an unprimeable number, because it can be changed into a prime (617429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12324 + ... + 12373.

2⁶¹⁷⁴²⁵ is an apocalyptic number.

It is an amenable number.

617425 is a deficient number, since it is larger than the sum of its proper divisors (148213).

617425 is a wasteful number, since it uses less digits than its factorization.

617425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24707 (or 24702 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 617425 is about 785.7639594687. The cubic root of 617425 is about 85.1519772426.

The spelling of 617425 in words is "six hundred seventeen thousand, four hundred twenty-five".