20250567 has 10 divisors (see below), whose sum is σ = 30250968. Its totient is φ = 13500324.

The previous prime is 20250563. The next prime is 20250569. The reversal of 20250567 is 76505202.

It is not a de Polignac number, because 20250567 - 2² = 20250563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20250567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124923 + ... + 125084.

Almost surely, 2^20250567 is an apocalyptic number.

20250567 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20250567 is a deficient number, since it is larger than the sum of its proper divisors (10000401).

20250567 is an equidigital number, since it uses as much as digits as its factorization.

20250567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250019 (or 250010 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20250567 is about 4500.0629995590. The cubic root of 20250567 is about 272.5706328699.

Adding to 20250567 its reverse (76505202), we get a palindrome (96755769).

The spelling of 20250567 in words is "twenty million, two hundred fifty thousand, five hundred sixty-seven".