625667 has 4 divisors (see below), whose sum is σ = 715056. Its totient is φ = 536280.

The previous prime is 625663. The next prime is 625697. The reversal of 625667 is 766526.

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 625667 - 2² = 625663 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44684 + ... + 44697.

It is an arithmetic number, because the mean of its divisors is an integer number (178764).

2⁶²⁵⁶⁶⁷ is an apocalyptic number.

625667 is a deficient number, since it is larger than the sum of its proper divisors (89389).

625667 is an equidigital number, since it uses as much as digits as its factorization.

625667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89388.

The product of its digits is 15120, while the sum is 32.

The square root of 625667 is about 790.9911503930. The cubic root of 625667 is about 85.5292012929.

The spelling of 625667 in words is "six hundred twenty-five thousand, six hundred sixty-seven".