225187539 has 16 divisors (see below), whose sum is σ = 312625824. Its totient is φ = 144057600.

The previous prime is 225187507. The next prime is 225187541. The reversal of 225187539 is 935781522.

It is a happy number.

It is not a de Polignac number, because 225187539 - 2⁵ = 225187507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225187539.

It is not an unprimeable number, because it can be changed into a prime (225187579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7504 + ... + 22509.

It is an arithmetic number, because the mean of its divisors is an integer number (19539114).

Almost surely, 2^225187539 is an apocalyptic number.

225187539 is a deficient number, since it is larger than the sum of its proper divisors (87438285).

225187539 is a wasteful number, since it uses less digits than its factorization.

225187539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30118.

The product of its digits is 151200, while the sum is 42.

The square root of 225187539 is about 15006.2499979175. The cubic root of 225187539 is about 608.3891378260.

The spelling of 225187539 in words is "two hundred twenty-five million, one hundred eighty-seven thousand, five hundred thirty-nine".