1425599 has 4 divisors (see below), whose sum is σ = 1629264. Its totient is φ = 1221936.

The previous prime is 1425583. The next prime is 1425601. The reversal of 1425599 is 9955241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1425599 - 2⁴ = 1425583 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101822 + ... + 101835.

It is an arithmetic number, because the mean of its divisors is an integer number (407316).

2^1425599 is an apocalyptic number.

1425599 is a deficient number, since it is larger than the sum of its proper divisors (203665).

1425599 is an equidigital number, since it uses as much as digits as its factorization.

1425599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203664.

The product of its digits is 16200, while the sum is 35.

The square root of 1425599 is about 1193.9845057621. The cubic root of 1425599 is about 112.5466210064.

The spelling of 1425599 in words is "one million, four hundred twenty-five thousand, five hundred ninety-nine".