255235055501 has 4 divisors (see below), whose sum is σ = 255236789052. Its totient is φ = 255233321952.

The previous prime is 255235055443. The next prime is 255235055507. The reversal of 255235055501 is 105550532552.

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 133816956100 + 121418099401 = 365810^2 + 348451^2 .

It is a cyclic number.

It is not a de Polignac number, because 255235055501 - 2⁶ = 255235055437 is a prime.

It is a super-2 number, since 2×255235055501² (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 (255235055507) 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, 623090 + ... + 948003.

It is an arithmetic number, because the mean of its divisors is an integer number (63809197263).

Almost surely, 2^255235055501 is an apocalyptic number.

It is an amenable number.

255235055501 is a deficient number, since it is larger than the sum of its proper divisors (1733551).

255235055501 is a wasteful number, since it uses less digits than its factorization.

255235055501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733550.

The product of its (nonzero) digits is 187500, while the sum is 38.

The spelling of 255235055501 in words is "two hundred fifty-five billion, two hundred thirty-five million, fifty-five thousand, five hundred one".