523425 has 24 divisors (see below), whose sum is σ = 990016. Its totient is φ = 239040.

The previous prime is 523417. The next prime is 523427. The reversal of 523425 is 524325.

It is not a de Polignac number, because 523425 - 2³ = 523417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

523425 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (523427) 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, 27 + ... + 1023.

2⁵²³⁴²⁵ is an apocalyptic number.

It is an amenable number.

523425 is a deficient number, since it is larger than the sum of its proper divisors (466591).

523425 is a wasteful number, since it uses less digits than its factorization.

523425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1012 counting only the distinct ones).

The product of its digits is 1200, while the sum is 21.

The square root of 523425 is about 723.4811676886. The cubic root of 523425 is about 80.5906800628.

Subtracting from 523425 its product of digits (1200), we obtain a palindrome (522225).

Subtracting 523425 from its reverse (524325), we obtain a square (900 = 30²).

The spelling of 523425 in words is "five hundred twenty-three thousand, four hundred twenty-five".