725533601 has 32 divisors (see below), whose sum is σ = 840806400. Its totient is φ = 620524800.

The previous prime is 725533591. The next prime is 725533603. The reversal of 725533601 is 106335527.

It is not a de Polignac number, because 725533601 - 2⁶ = 725533537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725533603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3168155 + ... + 3168383.

It is an arithmetic number, because the mean of its divisors is an integer number (26275200).

Almost surely, 2^725533601 is an apocalyptic number.

It is an amenable number.

725533601 is a deficient number, since it is larger than the sum of its proper divisors (115272799).

725533601 is a wasteful number, since it uses less digits than its factorization.

725533601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 725533601 is about 26935.7309349496. The cubic root of 725533601 is about 898.5712313544.

The spelling of 725533601 in words is "seven hundred twenty-five million, five hundred thirty-three thousand, six hundred one".