1253112045 has 32 divisors (see below), whose sum is σ = 2020408320. Its totient is φ = 663206400.

The previous prime is 1253112043. The next prime is 1253112061. The reversal of 1253112045 is 5402113521.

It is a happy number.

It is not a de Polignac number, because 1253112045 - 2¹ = 1253112043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253112043) 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 31 ways as a sum of consecutive naturals, for example, 2064132 + ... + 2064738.

It is an arithmetic number, because the mean of its divisors is an integer number (63137760).

Almost surely, 2^1253112045 is an apocalyptic number.

1253112045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253112045 is a deficient number, since it is larger than the sum of its proper divisors (767296275).

1253112045 is a wasteful number, since it uses less digits than its factorization.

1253112045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1253112045 is about 35399.3226630115. The cubic root of 1253112045 is about 1078.1105638563.

Adding to 1253112045 its reverse (5402113521), we get a palindrome (6655225566).

The spelling of 1253112045 in words is "one billion, two hundred fifty-three million, one hundred twelve thousand, forty-five".