625705 has 4 divisors (see below), whose sum is σ = 750852. Its totient is φ = 500560.

The previous prime is 625699. The next prime is 625763. The reversal of 625705 is 507526.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507526 = 2 ⋅253763.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 346921 = 528^2 + 589^2 .

It is not a de Polignac number, because 625705 - 2³ = 625697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62566 + ... + 62575.

It is an arithmetic number, because the mean of its divisors is an integer number (187713).

2⁶²⁵⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

625705 is a deficient number, since it is larger than the sum of its proper divisors (125147).

625705 is a wasteful number, since it uses less digits than its factorization.

625705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125146.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 625705 is about 791.0151705246. The cubic root of 625705 is about 85.5309328017.

The spelling of 625705 in words is "six hundred twenty-five thousand, seven hundred five".