1425881 has 2 divisors, whose sum is σ = 1425882. Its totient is φ = 1425880.

The previous prime is 1425877. The next prime is 1425883. The reversal of 1425881 is 1885241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 24025 = 1184^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425881 - 2² = 1425877 is a prime.

It is a super-2 number, since 2×1425881² = 4066273252322, which contains 22 as substring.

Together with 1425883, 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 (1425883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712940 + 712941.

It is an arithmetic number, because the mean of its divisors is an integer number (712941).

2^1425881 is an apocalyptic number.

It is an amenable number.

1425881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425881 is an equidigital number, since it uses as much as digits as its factorization.

1425881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 29.

The square root of 1425881 is about 1194.1025919074. The cubic root of 1425881 is about 112.5540415257.

The spelling of 1425881 in words is "one million, four hundred twenty-five thousand, eight hundred eighty-one".