1200025273 has 2 divisors, whose sum is σ = 1200025274. Its totient is φ = 1200025272.

The previous prime is 1200025271. The next prime is 1200025279. The reversal of 1200025273 is 3725200021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 750924409 + 449100864 = 27403^2 + 21192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200025273 - 2¹ = 1200025271 is a prime.

Together with 1200025271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200025271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600012636 + 600012637.

It is an arithmetic number, because the mean of its divisors is an integer number (600012637).

Almost surely, 2^1200025273 is an apocalyptic number.

It is an amenable number.

1200025273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200025273 is an equidigital number, since it uses as much as digits as its factorization.

1200025273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1200025273 is about 34641.3809337907. The cubic root of 1200025273 is about 1062.6660292886. Note that the first 3 decimals are identical.

Adding to 1200025273 its reverse (3725200021), we get a palindrome (4925225294).

It can be divided in two parts, 12000 and 25273, that added together give a palindrome (37273).

The spelling of 1200025273 in words is "one billion, two hundred million, twenty-five thousand, two hundred seventy-three".