726218525 has 6 divisors (see below), whose sum is σ = 900511002. Its totient is φ = 580974800.

The previous prime is 726218497. The next prime is 726218557. The reversal of 726218525 is 525812627.

It can be written as a sum of positive squares in 3 ways, for example, as 29997529 + 696220996 = 5477^2 + 26386^2 .

It is not a de Polignac number, because 726218525 - 2²⁴ = 709441309 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 5 ways as a sum of consecutive naturals, for example, 14524346 + ... + 14524395.

It is an arithmetic number, because the mean of its divisors is an integer number (150085167).

Almost surely, 2^726218525 is an apocalyptic number.

It is an amenable number.

726218525 is a deficient number, since it is larger than the sum of its proper divisors (174292477).

726218525 is a wasteful number, since it uses less digits than its factorization.

726218525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29048751 (or 29048746 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 726218525 is about 26948.4419772276. The cubic root of 726218525 is about 898.8539012102.

The spelling of 726218525 in words is "seven hundred twenty-six million, two hundred eighteen thousand, five hundred twenty-five".