52218925 has 12 divisors (see below), whose sum is σ = 70638336. Its totient is φ = 37977200.

The previous prime is 52218923. The next prime is 52218977. The reversal of 52218925 is 52981225.

It is a happy number.

52218925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52218925 - 2¹ = 52218923 is a prime.

It is a super-2 number, since 2×52218925² = 5453632256311250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52218923) 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, 94669 + ... + 95218.

It is an arithmetic number, because the mean of its divisors is an integer number (5886528).

Almost surely, 2^52218925 is an apocalyptic number.

52218925 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52218925 is a deficient number, since it is larger than the sum of its proper divisors (18419411).

52218925 is a wasteful number, since it uses less digits than its factorization.

52218925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189908 (or 189903 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 52218925 is about 7226.2663250118. The cubic root of 52218925 is about 373.7741899982.

The spelling of 52218925 in words is "fifty-two million, two hundred eighteen thousand, nine hundred twenty-five".