52521225 has 24 divisors (see below), whose sum is σ = 91407840. Its totient is φ = 26536320.

The previous prime is 52521221. The next prime is 52521257. The reversal of 52521225 is 52212525.

It is not a de Polignac number, because 52521225 - 2² = 52521221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52521195 and 52521204.

It is not an unprimeable number, because it can be changed into a prime (52521221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17004 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (3808660).

Almost surely, 2^52521225 is an apocalyptic number.

It is an amenable number.

52521225 is a deficient number, since it is larger than the sum of its proper divisors (38886615).

52521225 is a wasteful number, since it uses less digits than its factorization.

52521225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36889 (or 36884 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 52521225 is about 7247.1528892386. The cubic root of 52521225 is about 374.4940732976.

The spelling of 52521225 in words is "fifty-two million, five hundred twenty-one thousand, two hundred twenty-five".