1625105 has 4 divisors (see below), whose sum is σ = 1950132. Its totient is φ = 1300080.

The previous prime is 1625059. The next prime is 1625123. The reversal of 1625105 is 5015261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1274641 + 350464 = 1129^2 + 592^2 .

It is not a de Polignac number, because 1625105 - 2⁸ = 1624849 is a prime.

It is a super-2 number, since 2×1625105² = 5281932522050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162506 + ... + 162515.

It is an arithmetic number, because the mean of its divisors is an integer number (487533).

2^1625105 is an apocalyptic number.

It is an amenable number.

1625105 is a deficient number, since it is larger than the sum of its proper divisors (325027).

1625105 is an equidigital number, since it uses as much as digits as its factorization.

1625105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325026.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1625105 is about 1274.7960621213. The cubic root of 1625105 is about 117.5692665381.

The spelling of 1625105 in words is "one million, six hundred twenty-five thousand, one hundred five".