625407 has 4 divisors (see below), whose sum is σ = 833880. Its totient is φ = 416936.

The previous prime is 625397. The next prime is 625409. The reversal of 625407 is 704526.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 625407 - 2⁶ = 625343 is a prime.

It is a super-2 number, since 2×625407² = 782267831298, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625407.

It is not an unprimeable number, because it can be changed into a prime (625409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104232 + ... + 104237.

It is an arithmetic number, because the mean of its divisors is an integer number (208470).

2⁶²⁵⁴⁰⁷ is an apocalyptic number.

625407 is a deficient number, since it is larger than the sum of its proper divisors (208473).

625407 is a wasteful number, since it uses less digits than its factorization.

625407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208472.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 625407 is about 790.8267825510. The cubic root of 625407 is about 85.5173522457.

The spelling of 625407 in words is "six hundred twenty-five thousand, four hundred seven".