625949 has 4 divisors (see below), whose sum is σ = 630300. Its totient is φ = 621600.

The previous prime is 625943. The next prime is 625969. The reversal of 625949 is 949526.

625949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52900 + 573049 = 230^2 + 757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625943) 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, 1952 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (157575).

2⁶²⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

625949 is a deficient number, since it is larger than the sum of its proper divisors (4351).

625949 is a wasteful number, since it uses less digits than its factorization.

625949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350.

The product of its digits is 19440, while the sum is 35.

The square root of 625949 is about 791.1693876788. The cubic root of 625949 is about 85.5420492413.

The spelling of 625949 in words is "six hundred twenty-five thousand, nine hundred forty-nine".