20125087 has 2 divisors, whose sum is σ = 20125088. Its totient is φ = 20125086.

The previous prime is 20125073. The next prime is 20125099. The reversal of 20125087 is 78052102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20125087 - 2¹¹ = 20123039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062543 + 10062544.

It is an arithmetic number, because the mean of its divisors is an integer number (10062544).

Almost surely, 2^20125087 is an apocalyptic number.

20125087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125087 is an equidigital number, since it uses as much as digits as its factorization.

20125087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 20125087 is about 4486.0993078620. The cubic root of 20125087 is about 272.0064832293.

Adding to 20125087 its reverse (78052102), we get a palindrome (98177189).

The spelling of 20125087 in words is "twenty million, one hundred twenty-five thousand, eighty-seven".