1625493 has 4 divisors (see below), whose sum is σ = 2167328. Its totient is φ = 1083660.

The previous prime is 1625483. The next prime is 1625497. The reversal of 1625493 is 3945261.

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: 3945261 = 3 ⋅1315087.

It is not a de Polignac number, because 1625493 - 2⁵ = 1625461 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625497) 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, 270913 + ... + 270918.

It is an arithmetic number, because the mean of its divisors is an integer number (541832).

2^1625493 is an apocalyptic number.

It is an amenable number.

1625493 is a deficient number, since it is larger than the sum of its proper divisors (541835).

1625493 is an equidigital number, since it uses as much as digits as its factorization.

1625493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541834.

The product of its digits is 6480, while the sum is 30.

The square root of 1625493 is about 1274.9482342433. The cubic root of 1625493 is about 117.5786224967.

The spelling of 1625493 in words is "one million, six hundred twenty-five thousand, four hundred ninety-three".