149023825 has 12 divisors (see below), whose sum is σ = 186868620. Its totient is φ = 117877760.

The previous prime is 149023801. The next prime is 149023829. The reversal of 149023825 is 528320941.

It can be written as a sum of positive squares in 6 ways, for example, as 51251281 + 97772544 = 7159^2 + 9888^2 .

It is not a de Polignac number, because 149023825 - 2⁹ = 149023313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149023829) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 31264 + ... + 35713.

It is an arithmetic number, because the mean of its divisors is an integer number (15572385).

Almost surely, 2^149023825 is an apocalyptic number.

It is an amenable number.

149023825 is a deficient number, since it is larger than the sum of its proper divisors (37844795).

149023825 is an equidigital number, since it uses as much as digits as its factorization.

149023825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67076 (or 67071 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 149023825 is about 12207.5314867503. The cubic root of 149023825 is about 530.1741743910.

The spelling of 149023825 in words is "one hundred forty-nine million, twenty-three thousand, eight hundred twenty-five".