725552197 has 4 divisors (see below), whose sum is σ = 768231756. Its totient is φ = 682872640.

The previous prime is 725552167. The next prime is 725552213. The reversal of 725552197 is 791255527.

It is a happy number.

725552197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791255527 = 5077 ⋅155851.

It can be written as a sum of positive squares in 2 ways, for example, as 500372161 + 225180036 = 22369^2 + 15006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725552197 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 (725552167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21339754 + ... + 21339787.

It is an arithmetic number, because the mean of its divisors is an integer number (192057939).

Almost surely, 2^725552197 is an apocalyptic number.

It is an amenable number.

725552197 is a deficient number, since it is larger than the sum of its proper divisors (42679559).

725552197 is a wasteful number, since it uses less digits than its factorization.

725552197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42679558.

The product of its digits is 220500, while the sum is 43.

The square root of 725552197 is about 26936.0761247811. The cubic root of 725552197 is about 898.5789083192.

The spelling of 725552197 in words is "seven hundred twenty-five million, five hundred fifty-two thousand, one hundred ninety-seven".