725761851 has 8 divisors (see below), whose sum is σ = 968006160. Its totient is φ = 483679392.

The previous prime is 725761843. The next prime is 725761931. The reversal of 725761851 is 158167527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725761851 - 2³ = 725761843 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (725761811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29580 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (121000770).

Almost surely, 2^725761851 is an apocalyptic number.

725761851 is a deficient number, since it is larger than the sum of its proper divisors (242244309).

725761851 is a wasteful number, since it uses less digits than its factorization.

725761851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80925.

The product of its digits is 117600, while the sum is 42.

The square root of 725761851 is about 26939.9675389559. The cubic root of 725761851 is about 898.6654504593.

The spelling of 725761851 in words is "seven hundred twenty-five million, seven hundred sixty-one thousand, eight hundred fifty-one".