20275575 has 24 divisors (see below), whose sum is σ = 34307328. Its totient is φ = 10560480.

The previous prime is 20275573. The next prime is 20275579. The reversal of 20275575 is 57557202.

It is not a de Polignac number, because 20275575 - 2¹ = 20275573 is a prime.

It is a super-2 number, since 2×20275575² = 822197883161250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275573) 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, 82 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (1429472).

Almost surely, 2^20275575 is an apocalyptic number.

20275575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20275575 is a deficient number, since it is larger than the sum of its proper divisors (14031753).

20275575 is a wasteful number, since it uses less digits than its factorization.

20275575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343 (or 6338 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 20275575 is about 4502.8407700029. The cubic root of 20275575 is about 272.6827884517.

The spelling of 20275575 in words is "twenty million, two hundred seventy-five thousand, five hundred seventy-five".