725018287 has 16 divisors (see below), whose sum is σ = 848351232. Its totient is φ = 606692160.

The previous prime is 725018279. The next prime is 725018291. The reversal of 725018287 is 782810527.

It is a cyclic number.

It is not a de Polignac number, because 725018287 - 2³ = 725018279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725018267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139243 + ... + 144355.

It is an arithmetic number, because the mean of its divisors is an integer number (53021952).

Almost surely, 2^725018287 is an apocalyptic number.

725018287 is a deficient number, since it is larger than the sum of its proper divisors (123332945).

725018287 is a wasteful number, since it uses less digits than its factorization.

725018287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 725018287 is about 26926.1636145961. The cubic root of 725018287 is about 898.3584426771.

The spelling of 725018287 in words is "seven hundred twenty-five million, eighteen thousand, two hundred eighty-seven".