1263240025 has 12 divisors (see below), whose sum is σ = 1602847312. Its totient is φ = 987089040.

The previous prime is 1263240007. The next prime is 1263240031. The reversal of 1263240025 is 5200423621.

It is not a de Polignac number, because 1263240025 - 2⁷ = 1263239897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586479 + ... + 588628.

Almost surely, 2^1263240025 is an apocalyptic number.

It is an amenable number.

1263240025 is a deficient number, since it is larger than the sum of its proper divisors (339607287).

1263240025 is a wasteful number, since it uses less digits than its factorization.

1263240025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175160 (or 1175155 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1263240025 is about 35542.0880787834. The cubic root of 1263240025 is about 1081.0072978154.

Adding to 1263240025 its reverse (5200423621), we get a palindrome (6463663646).

The spelling of 1263240025 in words is "one billion, two hundred sixty-three million, two hundred forty thousand, twenty-five".