723778925 has 6 divisors (see below), whose sum is σ = 897485898. Its totient is φ = 579023120.

The previous prime is 723778921. The next prime is 723778933. The reversal of 723778925 is 529877327.

It can be written as a sum of positive squares in 3 ways, for example, as 1943236 + 721835689 = 1394^2 + 26867^2 .

It is not a de Polignac number, because 723778925 - 2² = 723778921 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 (723778921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14475554 + ... + 14475603.

It is an arithmetic number, because the mean of its divisors is an integer number (149580983).

Almost surely, 2^723778925 is an apocalyptic number.

It is an amenable number.

723778925 is a deficient number, since it is larger than the sum of its proper divisors (173706973).

723778925 is a wasteful number, since it uses less digits than its factorization.

723778925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28951167 (or 28951162 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 50.

The square root of 723778925 is about 26903.1396866611. The cubic root of 723778925 is about 897.8462595787.

The spelling of 723778925 in words is "seven hundred twenty-three million, seven hundred seventy-eight thousand, nine hundred twenty-five".