1325264261 has 8 divisors (see below), whose sum is σ = 1364595960. Its totient is φ = 1286117568.

The previous prime is 1325264249. The next prime is 1325264267. The reversal of 1325264261 is 1624625231.

It can be written as a sum of positive squares in 4 ways, for example, as 406022500 + 919241761 = 20150^2 + 30319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1325264261 - 2¹⁴ = 1325247877 is a prime.

It is a super-2 number, since 2×1325264261² = 3512650722967752242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325264267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31646 + ... + 60431.

It is an arithmetic number, because the mean of its divisors is an integer number (170574495).

Almost surely, 2^1325264261 is an apocalyptic number.

It is an amenable number.

1325264261 is a deficient number, since it is larger than the sum of its proper divisors (39331699).

1325264261 is an equidigital number, since it uses as much as digits as its factorization.

1325264261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92503.

The product of its digits is 17280, while the sum is 32.

The square root of 1325264261 is about 36404.1791694305. The cubic root of 1325264261 is about 1098.4176314392.

Adding to 1325264261 its reverse (1624625231), we get a palindrome (2949889492).

The spelling of 1325264261 in words is "one billion, three hundred twenty-five million, two hundred sixty-four thousand, two hundred sixty-one".