1245440875 has 16 divisors (see below), whose sum is σ = 1776355776. Its totient is φ = 854016000.

The previous prime is 1245440857. The next prime is 1245440923. The reversal of 1245440875 is 5780445421.

It is not a de Polignac number, because 1245440875 - 2¹⁵ = 1245408107 is a prime.

It is a super-2 number, since 2×1245440875² = 3102245946241531250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710806 + ... + 712555.

It is an arithmetic number, because the mean of its divisors is an integer number (111022236).

Almost surely, 2^1245440875 is an apocalyptic number.

1245440875 is a deficient number, since it is larger than the sum of its proper divisors (530914901).

1245440875 is an equidigital number, since it uses as much as digits as its factorization.

1245440875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423383 (or 1423373 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 40.

The square root of 1245440875 is about 35290.8043971797. The cubic root of 1245440875 is about 1075.9061046183.

The spelling of 1245440875 in words is "one billion, two hundred forty-five million, four hundred forty thousand, eight hundred seventy-five".