1425557 has 12 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 1193976.

The previous prime is 1425547. The next prime is 1425583. The reversal of 1425557 is 7555241.

It is not a de Polignac number, because 1425557 - 2⁸ = 1425301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1994 + ... + 2612.

It is an arithmetic number, because the mean of its divisors is an integer number (141360).

2^1425557 is an apocalyptic number.

It is an amenable number.

1425557 is a deficient number, since it is larger than the sum of its proper divisors (270763).

1425557 is an equidigital number, since it uses as much as digits as its factorization.

1425557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 673 counting only the distinct ones).

The product of its digits is 7000, while the sum is 29.

The square root of 1425557 is about 1193.9669174646. The cubic root of 1425557 is about 112.5455157389.

The spelling of 1425557 in words is "one million, four hundred twenty-five thousand, five hundred fifty-seven".