1252534435533 has 20 divisors (see below), whose sum is σ = 1873377172128. Its totient is φ = 833993291880.

The previous prime is 1252534435507. The next prime is 1252534435543. The reversal of 1252534435533 is 3355344352521.

1252534435533 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 53 + 4 + 43 + 553 + 3 = 666.

It is not a de Polignac number, because 1252534435533 - 2⁶ = 1252534435469 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252534435543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9467841 + ... + 9599222.

Almost surely, 2^{1252534435533} is an apocalyptic number.

It is an amenable number.

1252534435533 is a deficient number, since it is larger than the sum of its proper divisors (620842736595).

1252534435533 is an equidigital number, since it uses as much as digits as its factorization.

1252534435533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19067886 (or 19067877 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 45.

The spelling of 1252534435533 in words is "one trillion, two hundred fifty-two billion, five hundred thirty-four million, four hundred thirty-five thousand, five hundred thirty-three".