225515727 has 12 divisors (see below), whose sum is σ = 344906640. Its totient is φ = 141499968.

The previous prime is 225515723. The next prime is 225515747. The reversal of 225515727 is 727515522.

It is not a de Polignac number, because 225515727 - 2² = 225515723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225515691 and 225515700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225515723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 736827 + ... + 737132.

It is an arithmetic number, because the mean of its divisors is an integer number (28742220).

Almost surely, 2^225515727 is an apocalyptic number.

225515727 is a deficient number, since it is larger than the sum of its proper divisors (119390913).

225515727 is a wasteful number, since it uses less digits than its factorization.

225515727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473982 (or 1473979 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 225515727 is about 15017.1810603721. The cubic root of 225515727 is about 608.6845495172.

The spelling of 225515727 in words is "two hundred twenty-five million, five hundred fifteen thousand, seven hundred twenty-seven".