625523 has 4 divisors (see below), whose sum is σ = 638880. Its totient is φ = 612168.

The previous prime is 625517. The next prime is 625529. The reversal of 625523 is 325526.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (625517) and next prime (625529).

It is a cyclic number.

It is not a de Polignac number, because 625523 - 2⁴ = 625507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625529) 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, 6608 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (159720).

2⁶²⁵⁵²³ is an apocalyptic number.

625523 is a deficient number, since it is larger than the sum of its proper divisors (13357).

625523 is a wasteful number, since it uses less digits than its factorization.

625523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356.

The product of its digits is 1800, while the sum is 23.

The square root of 625523 is about 790.9001201163. The cubic root of 625523 is about 85.5226391493.

The spelling of 625523 in words is "six hundred twenty-five thousand, five hundred twenty-three".