253735742885 has 8 divisors (see below), whose sum is σ = 304538274936. Its totient is φ = 202951672000.

The previous prime is 253735742879. The next prime is 253735742899. The reversal of 253735742885 is 588247537352.

It can be written as a sum of positive squares in 4 ways, for example, as 47614294849 + 206121448036 = 218207^2 + 454006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253735742885 - 2⁸ = 253735742629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4585034 + ... + 4640043.

It is an arithmetic number, because the mean of its divisors is an integer number (38067284367).

Almost surely, 2^253735742885 is an apocalyptic number.

It is an amenable number.

253735742885 is a deficient number, since it is larger than the sum of its proper divisors (50802532051).

253735742885 is an equidigital number, since it uses as much as digits as its factorization.

253735742885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230583.

The product of its digits is 56448000, while the sum is 59.

The spelling of 253735742885 in words is "two hundred fifty-three billion, seven hundred thirty-five million, seven hundred forty-two thousand, eight hundred eighty-five".