1253051505 has 16 divisors (see below), whose sum is σ = 2227647360. Its totient is φ = 668294064.

The previous prime is 1253051491. The next prime is 1253051533. The reversal of 1253051505 is 5051503521.

1253051505 is a `hidden beast` number, since 125 + 30 + 5 + 1 + 505 = 666.

It is not a de Polignac number, because 1253051505 - 2⁷ = 1253051377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 4640797 + ... + 4641066.

It is an arithmetic number, because the mean of its divisors is an integer number (139227960).

Almost surely, 2^1253051505 is an apocalyptic number.

1253051505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253051505 is a deficient number, since it is larger than the sum of its proper divisors (974595855).

1253051505 is an equidigital number, since it uses as much as digits as its factorization.

1253051505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281877 (or 9281871 counting only the distinct ones).

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

The square root of 1253051505 is about 35398.4675515763. The cubic root of 1253051505 is about 1078.0932017843.

The spelling of 1253051505 in words is "one billion, two hundred fifty-three million, fifty-one thousand, five hundred five".