1005253045 has 32 divisors (see below), whose sum is σ = 1290643200. Its totient is φ = 749481984.

The previous prime is 1005253031. The next prime is 1005253049. The reversal of 1005253045 is 5403525001.

It is a cyclic number.

It is not a de Polignac number, because 1005253045 - 2⁷ = 1005252917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005253049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1998264 + ... + 1998766.

It is an arithmetic number, because the mean of its divisors is an integer number (40332600).

Almost surely, 2^1005253045 is an apocalyptic number.

It is an amenable number.

1005253045 is a deficient number, since it is larger than the sum of its proper divisors (285390155).

1005253045 is a wasteful number, since it uses less digits than its factorization.

1005253045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1005253045 is about 31705.7257447295. The cubic root of 1005253045 is about 1001.7479578631.

Adding to 1005253045 its reverse (5403525001), we get a palindrome (6408778046).

The spelling of 1005253045 in words is "one billion, five million, two hundred fifty-three thousand, forty-five".