725247 has 8 divisors (see below), whose sum is σ = 1074480. Its totient is φ = 483480.

The previous prime is 725209. The next prime is 725273. The reversal of 725247 is 742527.

It is not a de Polignac number, because 725247 - 2⁷ = 725119 is a prime.

It is a super-2 number, since 2×725247² = 1051966422018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 26861 = 725247 / (7 + 2 + 5 + 2 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 725247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725147) 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, 13404 + ... + 13457.

It is an arithmetic number, because the mean of its divisors is an integer number (134310).

2⁷²⁵²⁴⁷ is an apocalyptic number.

725247 is a deficient number, since it is larger than the sum of its proper divisors (349233).

725247 is a wasteful number, since it uses less digits than its factorization.

725247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26870 (or 26864 counting only the distinct ones).

The product of its digits is 3920, while the sum is 27.

The square root of 725247 is about 851.6143493389. The cubic root of 725247 is about 89.8452897606.

The spelling of 725247 in words is "seven hundred twenty-five thousand, two hundred forty-seven".