1255038017 has 4 divisors (see below), whose sum is σ = 1298315220. Its totient is φ = 1211760816.

The previous prime is 1255038013. The next prime is 1255038101. The reversal of 1255038017 is 7108305521.

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 608658241 + 646379776 = 24671^2 + 25424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255038017 - 2² = 1255038013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255038013) 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, 21638558 + ... + 21638615.

It is an arithmetic number, because the mean of its divisors is an integer number (324578805).

Almost surely, 2^1255038017 is an apocalyptic number.

It is an amenable number.

1255038017 is a deficient number, since it is larger than the sum of its proper divisors (43277203).

1255038017 is an equidigital number, since it uses as much as digits as its factorization.

1255038017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43277202.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1255038017 is about 35426.5157332753. The cubic root of 1255038017 is about 1078.6626155513.

The spelling of 1255038017 in words is "one billion, two hundred fifty-five million, thirty-eight thousand, seventeen".