1625045 has 4 divisors (see below), whose sum is σ = 1950060. Its totient is φ = 1300032.

The previous prime is 1625027. The next prime is 1625059. The reversal of 1625045 is 5405261.

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 707281 + 917764 = 841^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625045 - 2¹⁴ = 1608661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1625045.

It is a congruent 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, 162500 + ... + 162509.

It is an arithmetic number, because the mean of its divisors is an integer number (487515).

2^1625045 is an apocalyptic number.

It is an amenable number.

1625045 is a deficient number, since it is larger than the sum of its proper divisors (325015).

1625045 is an equidigital number, since it uses as much as digits as its factorization.

1625045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325014.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1625045 is about 1274.7725287282. The cubic root of 1625045 is about 117.5678196074.

The spelling of 1625045 in words is "one million, six hundred twenty-five thousand, forty-five".