225122517 has 16 divisors (see below), whose sum is σ = 353134080. Its totient is φ = 141253056.

The previous prime is 225122509. The next prime is 225122519. The reversal of 225122517 is 715221522.

225122517 is a `hidden beast` number, since 2 + 25 + 122 + 517 = 666.

It is not a de Polignac number, because 225122517 - 2³ = 225122509 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225122519) 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, 244773 + ... + 245690.

It is an arithmetic number, because the mean of its divisors is an integer number (22070880).

Almost surely, 2^225122517 is an apocalyptic number.

225122517 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

225122517 is a deficient number, since it is larger than the sum of its proper divisors (128011563).

225122517 is a wasteful number, since it uses less digits than its factorization.

225122517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490489 (or 490483 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 225122517 is about 15004.0833442100. The cubic root of 225122517 is about 608.3305755468.

The spelling of 225122517 in words is "two hundred twenty-five million, one hundred twenty-two thousand, five hundred seventeen".