20752275 has 24 divisors (see below), whose sum is σ = 36118720. Its totient is φ = 10484640.

The previous prime is 20752267. The next prime is 20752289. The reversal of 20752275 is 57225702.

It is not a de Polignac number, because 20752275 - 2³ = 20752267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5857 + ... + 8706.

Almost surely, 2^20752275 is an apocalyptic number.

20752275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20752275 is a deficient number, since it is larger than the sum of its proper divisors (15366445).

20752275 is a wasteful number, since it uses less digits than its factorization.

20752275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595 (or 14590 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 20752275 is about 4555.4664964194. The cubic root of 20752275 is about 274.8032752820.

Adding to 20752275 its reverse (57225702), we get a palindrome (77977977).

The spelling of 20752275 in words is "twenty million, seven hundred fifty-two thousand, two hundred seventy-five".