725224351 has 4 divisors (see below), whose sum is σ = 726840000. Its totient is φ = 723608704.

The previous prime is 725224349. The next prime is 725224363. The reversal of 725224351 is 153422527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725224351 - 2¹ = 725224349 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 (725224391) 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 3 ways as a sum of consecutive naturals, for example, 807151 + ... + 808048.

It is an arithmetic number, because the mean of its divisors is an integer number (181710000).

Almost surely, 2^725224351 is an apocalyptic number.

725224351 is a deficient number, since it is larger than the sum of its proper divisors (1615649).

725224351 is a wasteful number, since it uses less digits than its factorization.

725224351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615648.

The product of its digits is 16800, while the sum is 31.

The square root of 725224351 is about 26929.9898069049. The cubic root of 725224351 is about 898.4435448058.

Adding to 725224351 its reverse (153422527), we get a palindrome (878646878).

The spelling of 725224351 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, three hundred fifty-one".