1262425271 has 4 divisors (see below), whose sum is σ = 1271640192. Its totient is φ = 1253210352.

The previous prime is 1262425267. The next prime is 1262425279. The reversal of 1262425271 is 1725242621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1725242621 = 131 ⋅13169791.

It is a cyclic number.

It is not a de Polignac number, because 1262425271 - 2² = 1262425267 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 (1262425279) 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, 4607255 + ... + 4607528.

It is an arithmetic number, because the mean of its divisors is an integer number (317910048).

Almost surely, 2^1262425271 is an apocalyptic number.

1262425271 is a deficient number, since it is larger than the sum of its proper divisors (9214921).

1262425271 is an equidigital number, since it uses as much as digits as its factorization.

1262425271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9214920.

The product of its digits is 13440, while the sum is 32.

The square root of 1262425271 is about 35530.6244104997. The cubic root of 1262425271 is about 1080.7748414797.

Adding to 1262425271 its reverse (1725242621), we get a palindrome (2987667892).

The spelling of 1262425271 in words is "one billion, two hundred sixty-two million, four hundred twenty-five thousand, two hundred seventy-one".