1425997 has 8 divisors (see below), whose sum is σ = 1470392. Its totient is φ = 1382400.

The previous prime is 1425973. The next prime is 1426003. The reversal of 1425997 is 7995241.

It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 1371241 = 234^2 + 1171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425997 - 2¹¹ = 1423949 is a prime.

It is a Duffinian number.

1425997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5797 + ... + 6037.

It is an arithmetic number, because the mean of its divisors is an integer number (183799).

2^1425997 is an apocalyptic number.

It is an amenable number.

1425997 is a deficient number, since it is larger than the sum of its proper divisors (44395).

1425997 is an equidigital number, since it uses as much as digits as its factorization.

1425997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its digits is 22680, while the sum is 37.

The square root of 1425997 is about 1194.1511629605. The cubic root of 1425997 is about 112.5570936539.

The spelling of 1425997 in words is "one million, four hundred twenty-five thousand, nine hundred ninety-seven".