725227247 has 4 divisors (see below), whose sum is σ = 725299296. Its totient is φ = 725155200.

The previous prime is 725227219. The next prime is 725227267. The reversal of 725227247 is 742722527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 725227247 - 2¹² = 725223151 is a prime.

It is a super-3 number, since 3×725227247³ (a number of 28 digits) contains 333 as substring.

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 725227247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725227267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17879 + ... + 42072.

It is an arithmetic number, because the mean of its divisors is an integer number (181324824).

Almost surely, 2^725227247 is an apocalyptic number.

725227247 is a deficient number, since it is larger than the sum of its proper divisors (72049).

725227247 is a wasteful number, since it uses less digits than its factorization.

725227247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72048.

The product of its digits is 109760, while the sum is 38.

The square root of 725227247 is about 26930.0435759024. The cubic root of 725227247 is about 898.4447407066. Note that the first 3 decimals are identical.

The spelling of 725227247 in words is "seven hundred twenty-five million, two hundred twenty-seven thousand, two hundred forty-seven".