149838725 has 6 divisors (see below), whose sum is σ = 185800050. Its totient is φ = 119870960.

The previous prime is 149838719. The next prime is 149838743. The reversal of 149838725 is 527838941.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1437601 + 148401124 = 1199^2 + 12182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-149838725 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149838725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2996750 + ... + 2996799.

It is an arithmetic number, because the mean of its divisors is an integer number (30966675).

Almost surely, 2^149838725 is an apocalyptic number.

It is an amenable number.

149838725 is a deficient number, since it is larger than the sum of its proper divisors (35961325).

149838725 is an equidigital number, since it uses as much as digits as its factorization.

149838725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5993559 (or 5993554 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 149838725 is about 12240.8629189286. The cubic root of 149838725 is about 531.1387937933.

The spelling of 149838725 in words is "one hundred forty-nine million, eight hundred thirty-eight thousand, seven hundred twenty-five".