725204146 has 16 divisors (see below), whose sum is σ = 1116876600. Its totient is φ = 352952320.

The previous prime is 725204113. The next prime is 725204149. The reversal of 725204146 is 641402527.

It can be written as a sum of positive squares in 4 ways, for example, as 334707025 + 390497121 = 18295^2 + 19761^2 .

It is not an unprimeable number, because it can be changed into a prime (725204149) 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, 26970 + ... + 46666.

Almost surely, 2^725204146 is an apocalyptic number.

725204146 is a deficient number, since it is larger than the sum of its proper divisors (391672454).

725204146 is a wasteful number, since it uses less digits than its factorization.

725204146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20189.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 725204146 is about 26929.6146649001. The cubic root of 725204146 is about 898.4352010795.

The spelling of 725204146 in words is "seven hundred twenty-five million, two hundred four thousand, one hundred forty-six".