1253005515 has 24 divisors (see below), whose sum is σ = 2202471648. Its totient is φ = 658855680.

The previous prime is 1253005511. The next prime is 1253005529. The reversal of 1253005515 is 5155003521.

It is not a de Polignac number, because 1253005515 - 2² = 1253005511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253005511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192894 + ... + 199283.

It is an arithmetic number, because the mean of its divisors is an integer number (91769652).

Almost surely, 2^1253005515 is an apocalyptic number.

1253005515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1253005515 is a deficient number, since it is larger than the sum of its proper divisors (949466133).

1253005515 is a wasteful number, since it uses less digits than its factorization.

1253005515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392259 (or 392256 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1253005515 is about 35397.8179412234. The cubic root of 1253005515 is about 1078.0800120862.

The spelling of 1253005515 in words is "one billion, two hundred fifty-three million, five thousand, five hundred fifteen".