1625801 has 4 divisors (see below), whose sum is σ = 1696512. Its totient is φ = 1555092.

The previous prime is 1625791. The next prime is 1625803. The reversal of 1625801 is 1085261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1085261 = 19 ⋅57119.

It is a cyclic number.

It is not a de Polignac number, because 1625801 - 2¹⁴ = 1609417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 70687 = 1625801 / (1 + 6 + 2 + 5 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625803) 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 3 ways as a sum of consecutive naturals, for example, 35321 + ... + 35366.

It is an arithmetic number, because the mean of its divisors is an integer number (424128).

2^1625801 is an apocalyptic number.

It is an amenable number.

1625801 is a deficient number, since it is larger than the sum of its proper divisors (70711).

1625801 is an equidigital number, since it uses as much as digits as its factorization.

1625801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70710.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1625801 is about 1275.0690177398. The cubic root of 1625801 is about 117.5860483318.

The spelling of 1625801 in words is "one million, six hundred twenty-five thousand, eight hundred one".