1255735487 has 4 divisors (see below), whose sum is σ = 1265623296. Its totient is φ = 1245847680.

The previous prime is 1255735471. The next prime is 1255735501. The reversal of 1255735487 is 7845375521.

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 1255735487 - 2⁴ = 1255735471 is a prime.

It is a super-2 number, since 2×1255735487² = 3153743226622254338, which 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 (1255735417) 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, 4943714 + ... + 4943967.

It is an arithmetic number, because the mean of its divisors is an integer number (316405824).

Almost surely, 2^1255735487 is an apocalyptic number.

1255735487 is a deficient number, since it is larger than the sum of its proper divisors (9887809).

1255735487 is an equidigital number, since it uses as much as digits as its factorization.

1255735487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887808.

The product of its digits is 1176000, while the sum is 47.

The square root of 1255735487 is about 35436.3582637945. The cubic root of 1255735487 is about 1078.8623958185.

The spelling of 1255735487 in words is "one billion, two hundred fifty-five million, seven hundred thirty-five thousand, four hundred eighty-seven".