1275000015 has 16 divisors (see below), whose sum is σ = 2045253600. Its totient is φ = 678248832.

The previous prime is 1275000007. The next prime is 1275000031. The reversal of 1275000015 is 5100005721.

It is not a de Polignac number, because 1275000015 - 2³ = 1275000007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1274999955 and 1275000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103420 + ... + 115089.

It is an arithmetic number, because the mean of its divisors is an integer number (127828350).

Almost surely, 2^1275000015 is an apocalyptic number.

1275000015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1275000015 is a deficient number, since it is larger than the sum of its proper divisors (770253585).

1275000015 is a wasteful number, since it uses less digits than its factorization.

1275000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218906.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 1275000015 is about 35707.1423527563. The cubic root of 1275000015 is about 1084.3514468775.

Adding to 1275000015 its reverse (5100005721), we get a palindrome (6375005736).

The spelling of 1275000015 in words is "one billion, two hundred seventy-five million, fifteen", and thus it is an aban number.