255157035517 has 4 divisors (see below), whose sum is σ = 259971319260. Its totient is φ = 250342751776.

The previous prime is 255157035499. The next prime is 255157035527. The reversal of 255157035517 is 715530751552.

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 211182526116 + 43974509401 = 459546^2 + 209701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255157035517 is a prime.

It is a super-2 number, since 2×255157035517² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255157035527) 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, 2407141792 + ... + 2407141897.

It is an arithmetic number, because the mean of its divisors is an integer number (64992829815).

Almost surely, 2^255157035517 is an apocalyptic number.

It is an amenable number.

255157035517 is a deficient number, since it is larger than the sum of its proper divisors (4814283743).

255157035517 is an equidigital number, since it uses as much as digits as its factorization.

255157035517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4814283742.

The product of its (nonzero) digits is 918750, while the sum is 46.

The spelling of 255157035517 in words is "two hundred fifty-five billion, one hundred fifty-seven million, thirty-five thousand, five hundred seventeen".