731425 has 12 divisors (see below), whose sum is σ = 960876. Its totient is φ = 550400.

The previous prime is 731413. The next prime is 731447. The reversal of 731425 is 524137.

It can be written as a sum of positive squares in 6 ways, for example, as 12321 + 719104 = 111^2 + 848^2 .

It is not a de Polignac number, because 731425 - 2⁹ = 730913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 731396 and 731405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436 + ... + 1285.

It is an arithmetic number, because the mean of its divisors is an integer number (80073).

2⁷³¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

731425 is a deficient number, since it is larger than the sum of its proper divisors (229451).

731425 is a wasteful number, since it uses less digits than its factorization.

731425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1743 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 731425 is about 855.2338861388. The cubic root of 731425 is about 90.0996837884.

It can be divided in two parts, 731 and 425, that added together give a square (1156 = 34²).

The spelling of 731425 in words is "seven hundred thirty-one thousand, four hundred twenty-five".