20025667 has 2 divisors, whose sum is σ = 20025668. Its totient is φ = 20025666.

The previous prime is 20025661. The next prime is 20025683. The reversal of 20025667 is 76652002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20025667 - 2¹⁵ = 19992899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20025661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012833 + 10012834.

It is an arithmetic number, because the mean of its divisors is an integer number (10012834).

Almost surely, 2^20025667 is an apocalyptic number.

20025667 is a deficient number, since it is larger than the sum of its proper divisors (1).

20025667 is an equidigital number, since it uses as much as digits as its factorization.

20025667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20025667 is about 4475.0046927350. The cubic root of 20025667 is about 271.5578302830.

Adding to 20025667 its reverse (76652002), we get a palindrome (96677669).

The spelling of 20025667 in words is "twenty million, twenty-five thousand, six hundred sixty-seven".