255401581287 has 8 divisors (see below), whose sum is σ = 341264641536. Its totient is φ = 169903120952.

The previous prime is 255401581261. The next prime is 255401581313. The reversal of 255401581287 is 782185104552.

It is an interprime number because it is at equal distance from previous prime (255401581261) and next prime (255401581313).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255401581287 - 2¹⁰ = 255401580263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255401581207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91148343 + ... + 91151144.

It is an arithmetic number, because the mean of its divisors is an integer number (42658080192).

Almost surely, 2^255401581287 is an apocalyptic number.

255401581287 is a deficient number, since it is larger than the sum of its proper divisors (85863060249).

255401581287 is a wasteful number, since it uses less digits than its factorization.

255401581287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182299957.

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 255401581287 in words is "two hundred fifty-five billion, four hundred one million, five hundred eighty-one thousand, two hundred eighty-seven".