623425 has 12 divisors (see below), whose sum is σ = 843696. Its totient is φ = 453200.

The previous prime is 623423. The next prime is 623431. The reversal of 623425 is 524326.

It is a happy number.

623425 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 623425 - 2¹ = 623423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623396 and 623405.

It is not an unprimeable number, because it can be changed into a prime (623423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 859 + ... + 1408.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁶²³⁴²⁵ is an apocalyptic number.

It is an amenable number.

623425 is a deficient number, since it is larger than the sum of its proper divisors (220271).

623425 is a wasteful number, since it uses less digits than its factorization.

623425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2283 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 623425 is about 789.5726692332. The cubic root of 623425 is about 85.4269179315.

Subtracting from 623425 its reverse (524326), we obtain a palindrome (99099).

The spelling of 623425 in words is "six hundred twenty-three thousand, four hundred twenty-five".