1425667 has 2 divisors, whose sum is σ = 1425668. Its totient is φ = 1425666.

The previous prime is 1425661. The next prime is 1425707. The reversal of 1425667 is 7665241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1425667 - 2⁷ = 1425539 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1425661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712833 + 712834.

It is an arithmetic number, because the mean of its divisors is an integer number (712834).

2^1425667 is an apocalyptic number.

1425667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425667 is an equidigital number, since it uses as much as digits as its factorization.

1425667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 1425667 is about 1194.0129815040. The cubic root of 1425667 is about 112.5484104410.

Subtracting from 1425667 its sum of digits (31), we obtain a square (1425636 = 1194²).

The spelling of 1425667 in words is "one million, four hundred twenty-five thousand, six hundred sixty-seven".