623725 has 12 divisors (see below), whose sum is σ = 788020. Its totient is φ = 489600.

The previous prime is 623723. The next prime is 623729. The reversal of 623725 is 527326.

It can be written as a sum of positive squares in 6 ways, for example, as 24649 + 599076 = 157^2 + 774^2 .

It is not a de Polignac number, because 623725 - 2¹ = 623723 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a d-powerful number, because it can be written as 6⁶ + 2¹⁵ + 7⁵ + 3⁴ + 2¹⁹ + 5⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 623725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321 + ... + 1729.

2⁶²³⁷²⁵ is an apocalyptic number.

It is an amenable number.

623725 is a deficient number, since it is larger than the sum of its proper divisors (164295).

623725 is a wasteful number, since it uses less digits than its factorization.

623725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 475 counting only the distinct ones).

The product of its digits is 2520, while the sum is 25.

The square root of 623725 is about 789.7626225645. The cubic root of 623725 is about 85.4406185721.

The spelling of 623725 in words is "six hundred twenty-three thousand, seven hundred twenty-five".