1327525261 has 4 divisors (see below), whose sum is σ = 1333080000. Its totient is φ = 1321970524.

The previous prime is 1327525259. The next prime is 1327525267. The reversal of 1327525261 is 1625257231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1625257231 = 13 ⋅125019787.

It is a cyclic number.

It is not a de Polignac number, because 1327525261 - 2¹ = 1327525259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327525267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777011 + ... + 2777488.

It is an arithmetic number, because the mean of its divisors is an integer number (333270000).

Almost surely, 2^1327525261 is an apocalyptic number.

It is an amenable number.

1327525261 is a deficient number, since it is larger than the sum of its proper divisors (5554739).

1327525261 is an equidigital number, since it uses as much as digits as its factorization.

1327525261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554738.

The product of its digits is 25200, while the sum is 34.

The square root of 1327525261 is about 36435.2200624615. The cubic root of 1327525261 is about 1099.0419374277.

The spelling of 1327525261 in words is "one billion, three hundred twenty-seven million, five hundred twenty-five thousand, two hundred sixty-one".