725247106 has 4 divisors (see below), whose sum is σ = 1087870662. Its totient is φ = 362623552.

The previous prime is 725247049. The next prime is 725247113. The reversal of 725247106 is 601742527.

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

It can be written as a sum of positive squares in only one way, i.e., 701773081 + 23474025 = 26491^2 + 4845^2 .

It is a super-2 number, since 2×725247106² = 1051966729522750472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181311775 + ... + 181311778.

Almost surely, 2^725247106 is an apocalyptic number.

725247106 is a deficient number, since it is larger than the sum of its proper divisors (362623556).

725247106 is a wasteful number, since it uses less digits than its factorization.

725247106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362623555.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 725247106 is about 26930.4122879692. The cubic root of 725247106 is about 898.4529413781.

The spelling of 725247106 in words is "seven hundred twenty-five million, two hundred forty-seven thousand, one hundred six".