731505425 has 24 divisors (see below), whose sum is σ = 1072401600. Its totient is φ = 484303680.

The previous prime is 731505407. The next prime is 731505449. The reversal of 731505425 is 524505137.

731505425 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 731505425 - 2¹⁸ = 731243281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 731505391 and 731505400.

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, 66995 + ... + 77144.

It is an arithmetic number, because the mean of its divisors is an integer number (44683400).

Almost surely, 2^731505425 is an apocalyptic number.

It is an amenable number.

731505425 is a deficient number, since it is larger than the sum of its proper divisors (340896175).

731505425 is a wasteful number, since it uses less digits than its factorization.

731505425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144185 (or 144180 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 731505425 is about 27046.3569635543. The cubic root of 731505425 is about 901.0298601874.

The spelling of 731505425 in words is "seven hundred thirty-one million, five hundred five thousand, four hundred twenty-five".