729772925 has 18 divisors (see below), whose sum is σ = 1052661978. Its totient is φ = 500414880.

The previous prime is 729772913. The next prime is 729772937. The reversal of 729772925 is 529277927.

It is an interprime number because it is at equal distance from previous prime (729772913) and next prime (729772937).

It can be written as a sum of positive squares in 3 ways, for example, as 70756 + 729702169 = 266^2 + 27013^2 .

It is not a de Polignac number, because 729772925 - 2¹² = 729768829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 296642 + ... + 299091.

It is an arithmetic number, because the mean of its divisors is an integer number (58481221).

Almost surely, 2^729772925 is an apocalyptic number.

It is an amenable number.

729772925 is a deficient number, since it is larger than the sum of its proper divisors (322889053).

729772925 is a wasteful number, since it uses less digits than its factorization.

729772925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595757 (or 595745 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 50.

The square root of 729772925 is about 27014.3096339699. The cubic root of 729772925 is about 900.3179637840.

The spelling of 729772925 in words is "seven hundred twenty-nine million, seven hundred seventy-two thousand, nine hundred twenty-five".