255005342531 has 4 divisors (see below), whose sum is σ = 256128714312. Its totient is φ = 253881970752.

The previous prime is 255005342513. The next prime is 255005342551. The reversal of 255005342531 is 135243500552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255005342531 - 2³⁰ = 253931600707 is a prime.

It is a super-2 number, since 2×255005342531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255005342491 and 255005342500.

It is not an unprimeable number, because it can be changed into a prime (255005342551) 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, 561685550 + ... + 561686003.

It is an arithmetic number, because the mean of its divisors is an integer number (64032178578).

Almost surely, 2^255005342531 is an apocalyptic number.

255005342531 is a deficient number, since it is larger than the sum of its proper divisors (1123371781).

255005342531 is a wasteful number, since it uses less digits than its factorization.

255005342531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123371780.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 255005342531 in words is "two hundred fifty-five billion, five million, three hundred forty-two thousand, five hundred thirty-one".