725336578 has 4 divisors (see below), whose sum is σ = 1088004870. Its totient is φ = 362668288.

The previous prime is 725336527. The next prime is 725336593. The reversal of 725336578 is 875633527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 875633527 = 37 ⋅23665771.

It can be written as a sum of positive squares in only one way, i.e., 377252929 + 348083649 = 19423^2 + 18657^2 .

It is a super-2 number, since 2×725336578² = 1052226302769500168, 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, 181334143 + ... + 181334146.

Almost surely, 2^725336578 is an apocalyptic number.

725336578 is a deficient number, since it is larger than the sum of its proper divisors (362668292).

725336578 is a wasteful number, since it uses less digits than its factorization.

725336578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362668291.

The product of its digits is 1058400, while the sum is 46.

The square root of 725336578 is about 26932.0734069993. The cubic root of 725336578 is about 898.4898865220.

The spelling of 725336578 in words is "seven hundred twenty-five million, three hundred thirty-six thousand, five hundred seventy-eight".