747225 has 42 divisors (see below), whose sum is σ = 1423086. Its totient is φ = 388800.

The previous prime is 747223. The next prime is 747239. The reversal of 747225 is 522747.

It can be written as a sum of positive squares in 3 ways, for example, as 729 + 746496 = 27^2 + 864^2 .

It is not a de Polignac number, because 747225 - 2¹ = 747223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3920) is a multiple of the sum of its prime divisors (49).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747223) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18205 + ... + 18245.

It is an arithmetic number, because the mean of its divisors is an integer number (33883).

2⁷⁴⁷²²⁵ is an apocalyptic number.

747225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

747225 is a deficient number, since it is larger than the sum of its proper divisors (675861).

747225 is an equidigital number, since it uses as much as digits as its factorization.

747225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 49 counting only the distinct ones).

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

The square root of 747225 is about 864.4217720534. The cubic root of 747225 is about 90.7438353848.

The spelling of 747225 in words is "seven hundred forty-seven thousand, two hundred twenty-five".