724425 has 24 divisors (see below), whose sum is σ = 1291584. Its totient is φ = 356160.

The previous prime is 724403. The next prime is 724433. The reversal of 724425 is 524427.

724425 = 95² + 96² + ... + 144².

724425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 724425 - 2⁵ = 724393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 724395 and 724404.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (53816).

2⁷²⁴⁴²⁵ is an apocalyptic number.

724425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

724425 is a deficient number, since it is larger than the sum of its proper divisors (567159).

724425 is a wasteful number, since it uses less digits than its factorization.

724425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 764 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 724425 is about 851.1315996954. The cubic root of 724425 is about 89.8113331695.

The spelling of 724425 in words is "seven hundred twenty-four thousand, four hundred twenty-five".