20552525 has 12 divisors (see below), whose sum is σ = 29126112. Its totient is φ = 14093040.

The previous prime is 20552513. The next prime is 20552527. The reversal of 20552525 is 52525502.

It is not a de Polignac number, because 20552525 - 2²⁰ = 19503949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20552494 and 20552503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552527) 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, 58547 + ... + 58896.

It is an arithmetic number, because the mean of its divisors is an integer number (2427176).

Almost surely, 2^20552525 is an apocalyptic number.

20552525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20552525 is a deficient number, since it is larger than the sum of its proper divisors (8573587).

20552525 is a wasteful number, since it uses less digits than its factorization.

20552525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117460 (or 117455 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 20552525 is about 4533.4892742787. The cubic root of 20552525 is about 273.9187293378.

The spelling of 20552525 in words is "twenty million, five hundred fifty-two thousand, five hundred twenty-five".