1252878881 has 2 divisors, whose sum is σ = 1252878882. Its totient is φ = 1252878880.

The previous prime is 1252878853. The next prime is 1252878883. The reversal of 1252878881 is 1888782521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143048481 + 109830400 = 33809^2 + 10480^2 .

It is an emirp because it is prime and its reverse (1888782521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252878881 - 2¹⁴ = 1252862497 is a prime.

It is a super-2 number, since 2×1252878881² = 3139410980911624322, which contains 22 as substring.

Together with 1252878883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1252878883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626439440 + 626439441.

It is an arithmetic number, because the mean of its divisors is an integer number (626439441).

Almost surely, 2^1252878881 is an apocalyptic number.

It is an amenable number.

1252878881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252878881 is an equidigital number, since it uses as much as digits as its factorization.

1252878881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 573440, while the sum is 50.

The square root of 1252878881 is about 35396.0291699507. The cubic root of 1252878881 is about 1078.0436924313.

The spelling of 1252878881 in words is "one billion, two hundred fifty-two million, eight hundred seventy-eight thousand, eight hundred eighty-one".