149290225 has 24 divisors (see below), whose sum is σ = 216736128. Its totient is φ = 99868800.

The previous prime is 149290223. The next prime is 149290303. The reversal of 149290225 is 522092941.

It is not a de Polignac number, because 149290225 - 2¹ = 149290223 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (149290223) 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 23 ways as a sum of consecutive naturals, for example, 3229 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (9030672).

Almost surely, 2^149290225 is an apocalyptic number.

It is an amenable number.

149290225 is a deficient number, since it is larger than the sum of its proper divisors (67445903).

149290225 is a wasteful number, since it uses less digits than its factorization.

149290225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20865 (or 20860 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 149290225 is about 12218.4379116154. The cubic root of 149290225 is about 530.4899053884.

The spelling of 149290225 in words is "one hundred forty-nine million, two hundred ninety thousand, two hundred twenty-five".