725537047 has 8 divisors (see below), whose sum is σ = 764434944. Its totient is φ = 687251928.

The previous prime is 725537039. The next prime is 725537053. The reversal of 725537047 is 740735527.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 725537047 - 2³ = 725537039 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 (725537447) 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, 150763 + ... + 155500.

It is an arithmetic number, because the mean of its divisors is an integer number (95554368).

Almost surely, 2^725537047 is an apocalyptic number.

725537047 is a deficient number, since it is larger than the sum of its proper divisors (38897897).

725537047 is a wasteful number, since it uses less digits than its factorization.

725537047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306389.

The product of its (nonzero) digits is 205800, while the sum is 40.

The square root of 725537047 is about 26935.7949019516. The cubic root of 725537047 is about 898.5726539724.

The spelling of 725537047 in words is "seven hundred twenty-five million, five hundred thirty-seven thousand, forty-seven".