726257251 has 8 divisors (see below), whose sum is σ = 744058224. Its totient is φ = 708608160.

The previous prime is 726257219. The next prime is 726257293. The reversal of 726257251 is 152752627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726257251 - 2⁵ = 726257219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726257251.

It is not an unprimeable number, because it can be changed into a prime (726257951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28261 + ... + 47446.

It is an arithmetic number, because the mean of its divisors is an integer number (93007278).

Almost surely, 2^726257251 is an apocalyptic number.

726257251 is a deficient number, since it is larger than the sum of its proper divisors (17800973).

726257251 is a wasteful number, since it uses less digits than its factorization.

726257251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75941.

The product of its digits is 58800, while the sum is 37.

The square root of 726257251 is about 26949.1604878519. The cubic root of 726257251 is about 898.8698782182.

The spelling of 726257251 in words is "seven hundred twenty-six million, two hundred fifty-seven thousand, two hundred fifty-one".