725974738 has 4 divisors (see below), whose sum is σ = 1088962110. Its totient is φ = 362987368.

The previous prime is 725974729. The next prime is 725974789. The reversal of 725974738 is 837479527.

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., 638421289 + 87553449 = 25267^2 + 9357^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 181493683 + ... + 181493686.

Almost surely, 2^725974738 is an apocalyptic number.

725974738 is a deficient number, since it is larger than the sum of its proper divisors (362987372).

725974738 is a wasteful number, since it uses less digits than its factorization.

725974738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362987371.

The product of its digits is 2963520, while the sum is 52.

The square root of 725974738 is about 26943.9183861591. The cubic root of 725974738 is about 898.7533100828.

The spelling of 725974738 in words is "seven hundred twenty-five million, nine hundred seventy-four thousand, seven hundred thirty-eight".