1269243825 has 12 divisors (see below), whose sum is σ = 2098483248. Its totient is φ = 676930000.

The previous prime is 1269243823. The next prime is 1269243827. The reversal of 1269243825 is 5283429621.

It is an interprime number because it is at equal distance from previous prime (1269243823) and next prime (1269243827).

It is not a de Polignac number, because 1269243825 - 2¹ = 1269243823 is a prime.

It is a super-2 number, since 2×1269243825² = 3221959774601261250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1269243821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8461551 + ... + 8461700.

It is an arithmetic number, because the mean of its divisors is an integer number (174873604).

Almost surely, 2^1269243825 is an apocalyptic number.

1269243825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1269243825 is a deficient number, since it is larger than the sum of its proper divisors (829239423).

1269243825 is a wasteful number, since it uses less digits than its factorization.

1269243825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923264 (or 16923259 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 1269243825 is about 35626.4483916093. The cubic root of 1269243825 is about 1082.7171593977.

The spelling of 1269243825 in words is "one billion, two hundred sixty-nine million, two hundred forty-three thousand, eight hundred twenty-five".