153638825 has 6 divisors (see below), whose sum is σ = 190512174. Its totient is φ = 122911040.

The previous prime is 153638819. The next prime is 153638851. The reversal of 153638825 is 528836351.

It can be written as a sum of positive squares in 3 ways, for example, as 5456896 + 148181929 = 2336^2 + 12173^2 .

It is not a de Polignac number, because 153638825 - 2¹⁶ = 153573289 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 5 ways as a sum of consecutive naturals, for example, 3072752 + ... + 3072801.

It is an arithmetic number, because the mean of its divisors is an integer number (31752029).

Almost surely, 2^153638825 is an apocalyptic number.

It is an amenable number.

153638825 is a deficient number, since it is larger than the sum of its proper divisors (36873349).

153638825 is an equidigital number, since it uses as much as digits as its factorization.

153638825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145563 (or 6145558 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 153638825 is about 12395.1129482551. The cubic root of 153638825 is about 535.5914790670.

The spelling of 153638825 in words is "one hundred fifty-three million, six hundred thirty-eight thousand, eight hundred twenty-five".