725437 has 2 divisors, whose sum is σ = 725438. Its totient is φ = 725436.

The previous prime is 725423. The next prime is 725447. The reversal of 725437 is 734527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556516 + 168921 = 746^2 + 411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362718 + 362719.

It is an arithmetic number, because the mean of its divisors is an integer number (362719).

2⁷²⁵⁴³⁷ is an apocalyptic number.

It is an amenable number.

725437 is a deficient number, since it is larger than the sum of its proper divisors (1).

725437 is an equidigital number, since it uses as much as digits as its factorization.

725437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 28.

The square root of 725437 is about 851.7258948746. The cubic root of 725437 is about 89.8531349566.

The spelling of 725437 in words is "seven hundred twenty-five thousand, four hundred thirty-seven".