1252423523225 has 12 divisors (see below), whose sum is σ = 1774863050304. Its totient is φ = 858804701520.

The previous prime is 1252423523191. The next prime is 1252423523231. The reversal of 1252423523225 is 5223253242521.

It is not a de Polignac number, because 1252423523225 - 2⁸ = 1252423522969 is a prime.

It is a super-2 number, since 2×1252423523225² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3578352749 + ... + 3578353098.

It is an arithmetic number, because the mean of its divisors is an integer number (147905254192).

Almost surely, 2^{1252423523225} is an apocalyptic number.

It is an amenable number.

1252423523225 is a deficient number, since it is larger than the sum of its proper divisors (522439527079).

1252423523225 is an equidigital number, since it uses as much as digits as its factorization.

1252423523225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156705864 (or 7156705859 counting only the distinct ones).

The product of its digits is 288000, while the sum is 38.

Adding to 1252423523225 its reverse (5223253242521), we get a palindrome (6475676765746).

The spelling of 1252423523225 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-three million, five hundred twenty-three thousand, two hundred twenty-five".