1625089 has 4 divisors (see below), whose sum is σ = 1710640. Its totient is φ = 1539540.

The previous prime is 1625059. The next prime is 1625123. The reversal of 1625089 is 9805261.

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: 9805261 = 659 ⋅14879.

It is a cyclic number.

It is not a de Polignac number, because 1625089 - 2¹³ = 1616897 is a prime.

It is a super-4 number, since 4×1625089⁴ (a number of 26 digits) contains 4444 as substring.

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 1625089.

It is not an unprimeable number, because it can be changed into a prime (1625059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42747 + ... + 42784.

It is an arithmetic number, because the mean of its divisors is an integer number (427660).

2^1625089 is an apocalyptic number.

1625089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1625089 is a deficient number, since it is larger than the sum of its proper divisors (85551).

1625089 is an equidigital number, since it uses as much as digits as its factorization.

1625089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85550.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1625089 is about 1274.7897865923. The cubic root of 1625089 is about 117.5688806934.

The spelling of 1625089 in words is "one million, six hundred twenty-five thousand, eighty-nine".