252803257533 has 24 divisors (see below), whose sum is σ = 384680556000. Its totient is φ = 159540045984.

The previous prime is 252803257513. The next prime is 252803257541. The reversal of 252803257533 is 335752308252.

252803257533 is a `hidden beast` number, since 2 + 5 + 2 + 80 + 32 + 5 + 7 + 533 = 666.

It is not a de Polignac number, because 252803257533 - 2²² = 252799063229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252803257513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360483 + ... + 797216.

It is an arithmetic number, because the mean of its divisors is an integer number (16028356500).

Almost surely, 2^252803257533 is an apocalyptic number.

It is an amenable number.

252803257533 is a deficient number, since it is larger than the sum of its proper divisors (131877298467).

252803257533 is a wasteful number, since it uses less digits than its factorization.

252803257533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159001 (or 1158998 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 252803257533 in words is "two hundred fifty-two billion, eight hundred three million, two hundred fifty-seven thousand, five hundred thirty-three".