149206225 has 27 divisors (see below), whose sum is σ = 215840817. Its totient is φ = 102019680.

The previous prime is 149206219. The next prime is 149206241. The reversal of 149206225 is 522602941.

The square root of 149206225 is 12215.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1535121 + 147671104 = 1239^2 + 12152^2 .

It is not a de Polignac number, because 149206225 - 2⁹ = 149205713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 427351 + ... + 427699.

Almost surely, 2^149206225 is an apocalyptic number.

149206225 is the 12215-th square number.

149206225 is the 6108-th centered octagonal number.

It is an amenable number.

149206225 is a deficient number, since it is larger than the sum of its proper divisors (66634592).

149206225 is an frugal number, since it uses more digits than its factorization.

149206225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The cubic root of 149206225 is about 530.3903911429.

The spelling of 149206225 in words is "one hundred forty-nine million, two hundred six thousand, two hundred twenty-five".