257555833253 has 4 divisors (see below), whose sum is σ = 259521908448. Its totient is φ = 255589758060.

The previous prime is 257555833243. The next prime is 257555833361. The reversal of 257555833253 is 352338555752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257555833253 - 2⁶ = 257555833189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257555833195 and 257555833204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257555833243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983037401 + ... + 983037662.

It is an arithmetic number, because the mean of its divisors is an integer number (64880477112).

Almost surely, 2^257555833253 is an apocalyptic number.

It is an amenable number.

257555833253 is a deficient number, since it is larger than the sum of its proper divisors (1966075195).

257555833253 is a wasteful number, since it uses less digits than its factorization.

257555833253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966075194.

The product of its digits is 18900000, while the sum is 53.

The spelling of 257555833253 in words is "two hundred fifty-seven billion, five hundred fifty-five million, eight hundred thirty-three thousand, two hundred fifty-three".