1252425653 has 4 divisors (see below), whose sum is σ = 1253455980. Its totient is φ = 1251395328.

The previous prime is 1252425623. The next prime is 1252425673. The reversal of 1252425653 is 3565242521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 641001124 + 611424529 = 25318^2 + 24727^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252425653 - 2⁸ = 1252425397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252425623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 513338 + ... + 515771.

It is an arithmetic number, because the mean of its divisors is an integer number (313363995).

Almost surely, 2^1252425653 is an apocalyptic number.

It is an amenable number.

1252425653 is a deficient number, since it is larger than the sum of its proper divisors (1030327).

1252425653 is a wasteful number, since it uses less digits than its factorization.

1252425653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030326.

The product of its digits is 72000, while the sum is 35.

The square root of 1252425653 is about 35389.6263472787. The cubic root of 1252425653 is about 1077.9136829194.

The spelling of 1252425653 in words is "one billion, two hundred fifty-two million, four hundred twenty-five thousand, six hundred fifty-three".