726645425 has 24 divisors (see below), whose sum is σ = 1014673152. Its totient is φ = 511416000.

The previous prime is 726645421. The next prime is 726645461. The reversal of 726645425 is 524546627.

It is not a de Polignac number, because 726645425 - 2² = 726645421 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (726645421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34094 + ... + 51143.

It is an arithmetic number, because the mean of its divisors is an integer number (42278048).

Almost surely, 2^726645425 is an apocalyptic number.

It is an amenable number.

726645425 is a deficient number, since it is larger than the sum of its proper divisors (288027727).

726645425 is a wasteful number, since it uses less digits than its factorization.

726645425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85289 (or 85284 counting only the distinct ones).

The product of its digits is 403200, while the sum is 41.

The square root of 726645425 is about 26956.3614940889. The cubic root of 726645425 is about 899.0299940129.

The spelling of 726645425 in words is "seven hundred twenty-six million, six hundred forty-five thousand, four hundred twenty-five".