1265213325 has 48 divisors (see below), whose sum is σ = 2297710080. Its totient is φ = 611455680.

The previous prime is 1265213317. The next prime is 1265213353. The reversal of 1265213325 is 5233125621.

It is not a de Polignac number, because 1265213325 - 2³ = 1265213317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1265213292 and 1265213301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13474 + ... + 52076.

It is an arithmetic number, because the mean of its divisors is an integer number (47868960).

Almost surely, 2^1265213325 is an apocalyptic number.

1265213325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1265213325 is a deficient number, since it is larger than the sum of its proper divisors (1032496755).

1265213325 is a wasteful number, since it uses less digits than its factorization.

1265213325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38658 (or 38653 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 1265213325 is about 35569.8372922902. The cubic root of 1265213325 is about 1081.5698834136.

Adding to 1265213325 its reverse (5233125621), we get a palindrome (6498338946).

The spelling of 1265213325 in words is "one billion, two hundred sixty-five million, two hundred thirteen thousand, three hundred twenty-five".