20125471 has 2 divisors, whose sum is σ = 20125472. Its totient is φ = 20125470.

The previous prime is 20125453. The next prime is 20125513. The reversal of 20125471 is 17452102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20125471 - 2⁵ = 20125439 is a prime.

It is a super-3 number, since 3×20125471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062735 + 10062736.

It is an arithmetic number, because the mean of its divisors is an integer number (10062736).

Almost surely, 2^20125471 is an apocalyptic number.

20125471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125471 is an equidigital number, since it uses as much as digits as its factorization.

20125471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20125471 is about 4486.1421065321. The cubic root of 20125471 is about 272.0082132396.

Adding to 20125471 its reverse (17452102), we get a palindrome (37577573).

The spelling of 20125471 in words is "twenty million, one hundred twenty-five thousand, four hundred seventy-one".