725043251 has 8 divisors (see below), whose sum is σ = 768330000. Its totient is φ = 681827328.

The previous prime is 725043169. The next prime is 725043289. The reversal of 725043251 is 152340527.

It is a happy number.

725043251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725043251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725049251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4160 + ... + 38306.

It is an arithmetic number, because the mean of its divisors is an integer number (96041250).

Almost surely, 2^725043251 is an apocalyptic number.

725043251 is a deficient number, since it is larger than the sum of its proper divisors (43286749).

725043251 is a wasteful number, since it uses less digits than its factorization.

725043251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35413.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 725043251 is about 26926.6271746017. The cubic root of 725043251 is about 898.3687533884.

Adding to 725043251 its reverse (152340527), we get a palindrome (877383778).

The spelling of 725043251 in words is "seven hundred twenty-five million, forty-three thousand, two hundred fifty-one".