1253002945 has 8 divisors (see below), whose sum is σ = 1531973736. Its totient is φ = 983488896.

The previous prime is 1253002921. The next prime is 1253002951. The reversal of 1253002945 is 5492003521.

It can be written as a sum of positive squares in 4 ways, for example, as 130484929 + 1122518016 = 11423^2 + 33504^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253002945 - 2⁹ = 1253002433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2363892 + ... + 2364421.

It is an arithmetic number, because the mean of its divisors is an integer number (191496717).

Almost surely, 2^1253002945 is an apocalyptic number.

It is an amenable number.

1253002945 is a deficient number, since it is larger than the sum of its proper divisors (278970791).

1253002945 is an equidigital number, since it uses as much as digits as its factorization.

1253002945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728371.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1253002945 is about 35397.7816395322. The cubic root of 1253002945 is about 1078.0792750138.

The spelling of 1253002945 in words is "one billion, two hundred fifty-three million, two thousand, nine hundred forty-five".