1280079525 has 12 divisors (see below), whose sum is σ = 2116398272. Its totient is φ = 682709040.

The previous prime is 1280079523. The next prime is 1280079553. The reversal of 1280079525 is 5259700821.

It is not a de Polignac number, because 1280079525 - 2¹ = 1280079523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280079523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8533789 + ... + 8533938.

Almost surely, 2^1280079525 is an apocalyptic number.

1280079525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1280079525 is a deficient number, since it is larger than the sum of its proper divisors (836318747).

1280079525 is a wasteful number, since it uses less digits than its factorization.

1280079525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17067740 (or 17067735 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 1280079525 is about 35778.1990183967. The cubic root of 1280079525 is about 1085.7895320120.

The spelling of 1280079525 in words is "one billion, two hundred eighty million, seventy-nine thousand, five hundred twenty-five".