725656546 has 4 divisors (see below), whose sum is σ = 1088484822. Its totient is φ = 362828272.

The previous prime is 725656541. The next prime is 725656567. The reversal of 725656546 is 645656527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645656527 = 21407 ⋅30161.

It can be written as a sum of positive squares in only one way, i.e., 616975921 + 108680625 = 24839^2 + 10425^2 .

It is a junction number, because it is equal to n+sod(n) for n = 725656496 and 725656505.

It is not an unprimeable number, because it can be changed into a prime (725656541) by changing a digit.

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, 181414135 + ... + 181414138.

Almost surely, 2^725656546 is an apocalyptic number.

725656546 is a deficient number, since it is larger than the sum of its proper divisors (362828276).

725656546 is a wasteful number, since it uses less digits than its factorization.

725656546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362828275.

The product of its digits is 1512000, while the sum is 46.

The square root of 725656546 is about 26938.0130299174. The cubic root of 725656546 is about 898.6219841614.

The spelling of 725656546 in words is "seven hundred twenty-five million, six hundred fifty-six thousand, five hundred forty-six".