149171825 has 24 divisors (see below), whose sum is σ = 203501856. Its totient is φ = 108464400.

The previous prime is 149171807. The next prime is 149171837. The reversal of 149171825 is 528171941.

It is not a de Polignac number, because 149171825 - 2¹⁴ = 149155441 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 23 ways as a sum of consecutive naturals, for example, 31034 + ... + 35516.

It is an arithmetic number, because the mean of its divisors is an integer number (8479244).

Almost surely, 2^149171825 is an apocalyptic number.

It is an amenable number.

149171825 is a deficient number, since it is larger than the sum of its proper divisors (54330031).

149171825 is an equidigital number, since it uses as much as digits as its factorization.

149171825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526 (or 4499 counting only the distinct ones).

The product of its digits is 20160, while the sum is 38.

The square root of 149171825 is about 12213.5918140406. The cubic root of 149171825 is about 530.3496269103.

The spelling of 149171825 in words is "one hundred forty-nine million, one hundred seventy-one thousand, eight hundred twenty-five".