20071225 has 12 divisors (see below), whose sum is σ = 25137900. Its totient is φ = 15896000.

The previous prime is 20071217. The next prime is 20071267. The reversal of 20071225 is 52217002.

It can be written as a sum of positive squares in 6 ways, for example, as 393129 + 19678096 = 627^2 + 4436^2 .

It is not a de Polignac number, because 20071225 - 2³ = 20071217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1450 + ... + 6499.

It is an arithmetic number, because the mean of its divisors is an integer number (2094825).

Almost surely, 2^20071225 is an apocalyptic number.

20071225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20071225 is a deficient number, since it is larger than the sum of its proper divisors (5066675).

20071225 is a wasteful number, since it uses less digits than its factorization.

20071225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060 (or 8055 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20071225 is about 4480.0920749467. The cubic root of 20071225 is about 271.7636038990.

Adding to 20071225 its reverse (52217002), we get a palindrome (72288227).

The spelling of 20071225 in words is "twenty million, seventy-one thousand, two hundred twenty-five".