153505225 has 12 divisors (see below), whose sum is σ = 193939596. Its totient is φ = 120486080.

The previous prime is 153505201. The next prime is 153505229. The reversal of 153505225 is 522505351.

It can be written as a sum of positive squares in 6 ways, for example, as 1993744 + 151511481 = 1412^2 + 12309^2 .

It is not a de Polignac number, because 153505225 - 2¹⁵ = 153472457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153505193 and 153505202.

It is not an unprimeable number, because it can be changed into a prime (153505229) 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, 56602 + ... + 59251.

It is an arithmetic number, because the mean of its divisors is an integer number (16161633).

Almost surely, 2^153505225 is an apocalyptic number.

It is an amenable number.

153505225 is a deficient number, since it is larger than the sum of its proper divisors (40434371).

153505225 is a wasteful number, since it uses less digits than its factorization.

153505225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115916 (or 115911 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 153505225 is about 12389.7225554086. The cubic root of 153505225 is about 535.4361889521.

The spelling of 153505225 in words is "one hundred fifty-three million, five hundred five thousand, two hundred twenty-five".