625744 has 40 divisors (see below), whose sum is σ = 1432448. Its totient is φ = 259200.

The previous prime is 625699. The next prime is 625763. The reversal of 625744 is 447526.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4069 + ... + 4219.

2⁶²⁵⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716224).

625744 is an abundant number, since it is smaller than the sum of its proper divisors (806704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625744 is a wasteful number, since it uses less digits than its factorization.

625744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 197 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 625744 is about 791.0398220065. The cubic root of 625744 is about 85.5327098037.

It can be divided in two parts, 625 and 744, that added together give a square (1369 = 37²).

The spelling of 625744 in words is "six hundred twenty-five thousand, seven hundred forty-four".