725434 has 4 divisors (see below), whose sum is σ = 1088154. Its totient is φ = 362716.

The previous prime is 725423. The next prime is 725437. The reversal of 725434 is 434527.

725434 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 only one way, i.e., 525625 + 199809 = 725^2 + 447^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 725399 and 725408.

It is not an unprimeable number, because it can be changed into a prime (725437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181357 + ... + 181360.

2⁷²⁵⁴³⁴ is an apocalyptic number.

725434 is a deficient number, since it is larger than the sum of its proper divisors (362720).

725434 is a wasteful number, since it uses less digits than its factorization.

725434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362719.

The product of its digits is 3360, while the sum is 25.

The square root of 725434 is about 851.7241337428. The cubic root of 725434 is about 89.8530110957.

The spelling of 725434 in words is "seven hundred twenty-five thousand, four hundred thirty-four".