625823 has 4 divisors (see below), whose sum is σ = 682728. Its totient is φ = 568920.

The previous prime is 625819. The next prime is 625831. The reversal of 625823 is 328526.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 625823 - 2² = 625819 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625792 and 625801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625883) 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 3 ways as a sum of consecutive naturals, for example, 28436 + ... + 28457.

It is an arithmetic number, because the mean of its divisors is an integer number (170682).

2⁶²⁵⁸²³ is an apocalyptic number.

625823 is a deficient number, since it is larger than the sum of its proper divisors (56905).

625823 is a wasteful number, since it uses less digits than its factorization.

625823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56904.

The product of its digits is 2880, while the sum is 26.

The square root of 625823 is about 791.0897547055. The cubic root of 625823 is about 85.5363091456.

It can be divided in two parts, 62 and 5823, that added together give a palindrome (5885).

The spelling of 625823 in words is "six hundred twenty-five thousand, eight hundred twenty-three".