225247525 has 6 divisors (see below), whose sum is σ = 279306962. Its totient is φ = 180198000.

The previous prime is 225247511. The next prime is 225247537. The reversal of 225247525 is 525742522.

It can be written as a sum of positive squares in 3 ways, for example, as 36954241 + 188293284 = 6079^2 + 13722^2 .

It is not a de Polignac number, because 225247525 - 2⁵ = 225247493 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, 4504926 + ... + 4504975.

Almost surely, 2^225247525 is an apocalyptic number.

225247525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225247525 is a deficient number, since it is larger than the sum of its proper divisors (54059437).

225247525 is an equidigital number, since it uses as much as digits as its factorization.

225247525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009911 (or 9009906 counting only the distinct ones).

The product of its digits is 56000, while the sum is 34.

The square root of 225247525 is about 15008.2485653723. The cubic root of 225247525 is about 608.4431544188.

The spelling of 225247525 in words is "two hundred twenty-five million, two hundred forty-seven thousand, five hundred twenty-five".