625091 has 4 divisors (see below), whose sum is σ = 639672. Its totient is φ = 610512.

The previous prime is 625087. The next prime is 625103. The reversal of 625091 is 190526.

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 625091 - 2² = 625087 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625091.

It is not an unprimeable number, because it can be changed into a prime (625591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7226 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (159918).

2⁶²⁵⁰⁹¹ is an apocalyptic number.

625091 is a deficient number, since it is larger than the sum of its proper divisors (14581).

625091 is a wasteful number, since it uses less digits than its factorization.

625091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14580.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 625091 is about 790.6269664007. The cubic root of 625091 is about 85.5029466741.

The spelling of 625091 in words is "six hundred twenty-five thousand, ninety-one".