225116442 has 32 divisors (see below), whose sum is σ = 501399360. Its totient is φ = 74867760.

The previous prime is 225116429. The next prime is 225116471. The reversal of 225116442 is 244611522.

225116442 is a `hidden beast` number, since 2 + 2 + 5 + 11 + 644 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20373 + ... + 29415.

It is an arithmetic number, because the mean of its divisors is an integer number (15668730).

Almost surely, 2^225116442 is an apocalyptic number.

225116442 is an abundant number, since it is smaller than the sum of its proper divisors (276282918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225116442 is a wasteful number, since it uses less digits than its factorization.

225116442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515 (or 9509 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 225116442 is about 15003.8808979544. The cubic root of 225116442 is about 608.3251035020.

Adding to 225116442 its reverse (244611522), we get a palindrome (469727964).

The spelling of 225116442 in words is "two hundred twenty-five million, one hundred sixteen thousand, four hundred forty-two".