154042225 has 12 divisors (see below), whose sum is σ = 191166336. Its totient is φ = 123134480.

The previous prime is 154042223. The next prime is 154042243. The reversal of 154042225 is 522240451.

It is not a de Polignac number, because 154042225 - 2¹ = 154042223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154042225.

It is not an unprimeable number, because it can be changed into a prime (154042223) 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 11 ways as a sum of consecutive naturals, for example, 59304 + ... + 61846.

It is an arithmetic number, because the mean of its divisors is an integer number (15930528).

Almost surely, 2^154042225 is an apocalyptic number.

It is an amenable number.

154042225 is a deficient number, since it is larger than the sum of its proper divisors (37124111).

154042225 is a wasteful number, since it uses less digits than its factorization.

154042225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 154042225 is about 12411.3748231209. The cubic root of 154042225 is about 536.0598259223.

Adding to 154042225 its reverse (522240451), we get a palindrome (676282676).

The spelling of 154042225 in words is "one hundred fifty-four million, forty-two thousand, two hundred twenty-five".