225101791 has 4 divisors (see below), whose sum is σ = 225131800. Its totient is φ = 225071784.

The previous prime is 225101783. The next prime is 225101801. The reversal of 225101791 is 197101522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 197101522 = 2 ⋅98550761.

It is a cyclic number.

It is not a de Polignac number, because 225101791 - 2³ = 225101783 is a prime.

It is a super-2 number, since 2×225101791² = 101341632622815362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225101761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7300 + ... + 22438.

It is an arithmetic number, because the mean of its divisors is an integer number (56282950).

Almost surely, 2^225101791 is an apocalyptic number.

225101791 is a deficient number, since it is larger than the sum of its proper divisors (30009).

225101791 is a wasteful number, since it uses less digits than its factorization.

225101791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30008.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 225101791 is about 15003.3926496643. The cubic root of 225101791 is about 608.3119062364.

The spelling of 225101791 in words is "two hundred twenty-five million, one hundred one thousand, seven hundred ninety-one".