149125545 has 12 divisors (see below), whose sum is σ = 258484356. Its totient is φ = 79533600.

The previous prime is 149125523. The next prime is 149125549. The reversal of 149125545 is 545521941.

149125545 is a `hidden beast` number, since 1 + 4 + 91 + 25 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34999056 + 114126489 = 5916^2 + 10683^2 .

It is not a de Polignac number, because 149125545 - 2⁸ = 149125289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149125549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1656906 + ... + 1656995.

It is an arithmetic number, because the mean of its divisors is an integer number (21540363).

Almost surely, 2^149125545 is an apocalyptic number.

149125545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149125545 is a deficient number, since it is larger than the sum of its proper divisors (109358811).

149125545 is a wasteful number, since it uses less digits than its factorization.

149125545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313912 (or 3313909 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 149125545 is about 12211.6970565110. The cubic root of 149125545 is about 530.2947749089.

The spelling of 149125545 in words is "one hundred forty-nine million, one hundred twenty-five thousand, five hundred forty-five".