255015321233531 has 4 divisors (see below), whose sum is σ = 255019438895472. Its totient is φ = 255011203571592.

The previous prime is 255015321233489. The next prime is 255015321233573. The reversal of 255015321233531 is 135332123510552.

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

It is an interprime number because it is at equal distance from previous prime (255015321233489) and next prime (255015321233573).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255015321233531 is a prime.

It is a super-2 number, since 2×255015321233531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255015321233131) 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, 2058738071 + ... + 2058861936.

It is an arithmetic number, because the mean of its divisors is an integer number (63754859723868).

Almost surely, 2^{255015321233531} is an apocalyptic number.

255015321233531 is a deficient number, since it is larger than the sum of its proper divisors (4117661941).

255015321233531 is an equidigital number, since it uses as much as digits as its factorization.

255015321233531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117661940.

The product of its (nonzero) digits is 405000, while the sum is 41.

The spelling of 255015321233531 in words is "two hundred fifty-five trillion, fifteen billion, three hundred twenty-one million, two hundred thirty-three thousand, five hundred thirty-one".