520153225 has 12 divisors (see below), whose sum is σ = 645747856. Its totient is φ = 415633680.

The previous prime is 520153223. The next prime is 520153229. The reversal of 520153225 is 522351025.

It is a happy number.

It is not a de Polignac number, because 520153225 - 2¹ = 520153223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520153225.

It is not an unprimeable number, because it can be changed into a prime (520153223) 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, 10294 + ... + 33856.

Almost surely, 2^520153225 is an apocalyptic number.

It is an amenable number.

520153225 is a deficient number, since it is larger than the sum of its proper divisors (125594631).

520153225 is a wasteful number, since it uses less digits than its factorization.

520153225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24456 (or 24451 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520153225 is about 22806.8679349007. The cubic root of 520153225 is about 804.2241280258.

The spelling of 520153225 in words is "five hundred twenty million, one hundred fifty-three thousand, two hundred twenty-five".