725429761 has 6 divisors (see below), whose sum is σ = 843867330. Its totient is φ = 621796896.

The previous prime is 725429753. The next prime is 725429767. The reversal of 725429761 is 167924527.

It can be written as a sum of positive squares in only one way, i.e., 678081600 + 47348161 = 26040^2 + 6881^2 .

It is not a de Polignac number, because 725429761 - 2³ = 725429753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725429767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7402296 + ... + 7402393.

It is an arithmetic number, because the mean of its divisors is an integer number (140644555).

Almost surely, 2^725429761 is an apocalyptic number.

It is an amenable number.

725429761 is a deficient number, since it is larger than the sum of its proper divisors (118437569).

725429761 is a wasteful number, since it uses less digits than its factorization.

725429761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804703 (or 14804696 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 725429761 is about 26933.8033147938. The cubic root of 725429761 is about 898.5283607975.

The spelling of 725429761 in words is "seven hundred twenty-five million, four hundred twenty-nine thousand, seven hundred sixty-one".