725701061 has 4 divisors (see below), whose sum is σ = 729348000. Its totient is φ = 722054124.

The previous prime is 725701057. The next prime is 725701087. The reversal of 725701061 is 160107527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725701061 - 2² = 725701057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725701021) 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 in 3 ways as a sum of consecutive naturals, for example, 1823171 + ... + 1823568.

It is an arithmetic number, because the mean of its divisors is an integer number (182337000).

Almost surely, 2^725701061 is an apocalyptic number.

It is an amenable number.

725701061 is a deficient number, since it is larger than the sum of its proper divisors (3646939).

725701061 is a wasteful number, since it uses less digits than its factorization.

725701061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646938.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 725701061 is about 26938.8392660114. The cubic root of 725701061 is about 898.6403589421.

Adding to 725701061 its reverse (160107527), we get a palindrome (885808588).

The spelling of 725701061 in words is "seven hundred twenty-five million, seven hundred one thousand, sixty-one".