20525252 has 12 divisors (see below), whose sum is σ = 39184656. Its totient is φ = 9329640.

The previous prime is 20525251. The next prime is 20525261. The reversal of 20525252 is 25252502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20525251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233198 + ... + 233285.

It is an arithmetic number, because the mean of its divisors is an integer number (3265388).

Almost surely, 2^20525252 is an apocalyptic number.

20525252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20525252 is a deficient number, since it is larger than the sum of its proper divisors (18659404).

20525252 is a wasteful number, since it uses less digits than its factorization.

20525252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466498 (or 466496 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20525252 is about 4530.4803277357. The cubic root of 20525252 is about 273.7975132113.

Adding to 20525252 its reverse (25252502), we get a palindrome (45777754).

The spelling of 20525252 in words is "twenty million, five hundred twenty-five thousand, two hundred fifty-two".