1255442015 has 4 divisors (see below), whose sum is σ = 1506530424. Its totient is φ = 1004353608.

The previous prime is 1255442003. The next prime is 1255442063. The reversal of 1255442015 is 5102445521.

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 1255442015 - 2³⁰ = 181700191 is a prime.

It is a super-2 number, since 2×1255442015² = 3152269306054520450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125544197 + ... + 125544206.

It is an arithmetic number, because the mean of its divisors is an integer number (376632606).

Almost surely, 2^1255442015 is an apocalyptic number.

1255442015 is a deficient number, since it is larger than the sum of its proper divisors (251088409).

1255442015 is an equidigital number, since it uses as much as digits as its factorization.

1255442015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251088408.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1255442015 is about 35432.2171900094. The cubic root of 1255442015 is about 1078.7783439948.

Adding to 1255442015 its reverse (5102445521), we get a palindrome (6357887536).

The spelling of 1255442015 in words is "one billion, two hundred fifty-five million, four hundred forty-two thousand, fifteen".