1425591 has 12 divisors (see below), whose sum is σ = 2074800. Its totient is φ = 943200.

The previous prime is 1425583. The next prime is 1425601. The reversal of 1425591 is 1955241.

It is not a de Polignac number, because 1425591 - 2³ = 1425583 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425511) 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 in 11 ways as a sum of consecutive naturals, for example, 835 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (172900).

2^1425591 is an apocalyptic number.

1425591 is a deficient number, since it is larger than the sum of its proper divisors (649209).

1425591 is a wasteful number, since it uses less digits than its factorization.

1425591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 1203 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1425591 is about 1193.9811556302. The cubic root of 1425591 is about 112.5464104809.

It can be divided in two parts, 1425 and 591, that added together give a triangular number (2016 = T₆₃).

The spelling of 1425591 in words is "one million, four hundred twenty-five thousand, five hundred ninety-one".