20127425 has 6 divisors (see below), whose sum is σ = 24958038. Its totient is φ = 16101920.

The previous prime is 20127407. The next prime is 20127427. The reversal of 20127425 is 52472102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2226064 + 17901361 = 1492^2 + 4231^2 .

It is not a de Polignac number, because 20127425 - 2⁶ = 20127361 is a prime.

It is a super-2 number, since 2×20127425² = 810226474261250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20127425.

It is not an unprimeable number, because it can be changed into a prime (20127427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402524 + ... + 402573.

It is an arithmetic number, because the mean of its divisors is an integer number (4159673).

Almost surely, 2^20127425 is an apocalyptic number.

20127425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20127425 is a deficient number, since it is larger than the sum of its proper divisors (4830613).

20127425 is an equidigital number, since it uses as much as digits as its factorization.

20127425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805107 (or 805102 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 20127425 is about 4486.3598830232. The cubic root of 20127425 is about 272.0170161284.

Adding to 20127425 its reverse (52472102), we get a palindrome (72599527).

The spelling of 20127425 in words is "twenty million, one hundred twenty-seven thousand, four hundred twenty-five".