1425246191 has 2 divisors, whose sum is σ = 1425246192. Its totient is φ = 1425246190.

The previous prime is 1425246143. The next prime is 1425246211. The reversal of 1425246191 is 1916425241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1425246191 - 2²² = 1421051887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425246101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712623095 + 712623096.

It is an arithmetic number, because the mean of its divisors is an integer number (712623096).

Almost surely, 2^1425246191 is an apocalyptic number.

1425246191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425246191 is an equidigital number, since it uses as much as digits as its factorization.

1425246191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 1425246191 is about 37752.4329149791. The cubic root of 1425246191 is about 1125.3733584815.

The spelling of 1425246191 in words is "one billion, four hundred twenty-five million, two hundred forty-six thousand, one hundred ninety-one".