625431 has 8 divisors (see below), whose sum is σ = 839680. Its totient is φ = 414072.

The previous prime is 625409. The next prime is 625451. The reversal of 625431 is 134526.

It is a happy number.

625431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 625431 - 2⁶ = 625367 is a prime.

It is a super-2 number, since 2×625431² = 782327871522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625398 and 625407.

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 625431.

It is not an unprimeable number, because it can be changed into a prime (625451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (104960).

2⁶²⁵⁴³¹ is an apocalyptic number.

625431 is a deficient number, since it is larger than the sum of its proper divisors (214249).

625431 is a wasteful number, since it uses less digits than its factorization.

625431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its digits is 720, while the sum is 21.

The square root of 625431 is about 790.8419563984. The cubic root of 625431 is about 85.5184461415.

Adding to 625431 its reverse (134526), we get a palindrome (759957).

The spelling of 625431 in words is "six hundred twenty-five thousand, four hundred thirty-one".