1625006 has 4 divisors (see below), whose sum is σ = 2437512. Its totient is φ = 812502.

The previous prime is 1624993. The next prime is 1625017. The reversal of 1625006 is 6005261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6005261 = 617 ⋅9733.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406250 + ... + 406253.

It is an arithmetic number, because the mean of its divisors is an integer number (609378).

2^1625006 is an apocalyptic number.

1625006 is a deficient number, since it is larger than the sum of its proper divisors (812506).

1625006 is an equidigital number, since it uses as much as digits as its factorization.

1625006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812505.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1625006 is about 1274.7572317896. The cubic root of 1625006 is about 117.5668790834.

The spelling of 1625006 in words is "one million, six hundred twenty-five thousand, six".