22505151 has 16 divisors (see below), whose sum is σ = 30841344. Its totient is φ = 14590464.

The previous prime is 22505149. The next prime is 22505159. The reversal of 22505151 is 15150522.

It is not a de Polignac number, because 22505151 - 2¹ = 22505149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26800 + ... + 27626.

It is an arithmetic number, because the mean of its divisors is an integer number (1927584).

Almost surely, 2^22505151 is an apocalyptic number.

22505151 is a deficient number, since it is larger than the sum of its proper divisors (8336193).

22505151 is a wasteful number, since it uses less digits than its factorization.

22505151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 22505151 is about 4743.9594222548. The cubic root of 22505151 is about 282.3323504720.

Adding to 22505151 its reverse (15150522), we get a palindrome (37655673).

The spelling of 22505151 in words is "twenty-two million, five hundred five thousand, one hundred fifty-one".