1625423 has 4 divisors (see below), whose sum is σ = 1677888. Its totient is φ = 1572960.

The previous prime is 1625419. The next prime is 1625453. The reversal of 1625423 is 3245261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3245261 = 61 ⋅53201.

It is a cyclic number.

It is not a de Polignac number, because 1625423 - 2² = 1625419 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁶ + 2¹¹ + 5⁵ + 4¹⁰ + 2¹⁹ + 3⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625453) 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, 26186 + ... + 26247.

It is an arithmetic number, because the mean of its divisors is an integer number (419472).

2^1625423 is an apocalyptic number.

1625423 is a deficient number, since it is larger than the sum of its proper divisors (52465).

1625423 is an equidigital number, since it uses as much as digits as its factorization.

1625423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52464.

The product of its digits is 1440, while the sum is 23.

The square root of 1625423 is about 1274.9207818527. The cubic root of 1625423 is about 117.5769346761.

It can be divided in two parts, 1625 and 423, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1625423 in words is "one million, six hundred twenty-five thousand, four hundred twenty-three".