1625285 has 8 divisors (see below), whose sum is σ = 2065176. Its totient is φ = 1223680.

The previous prime is 1625263. The next prime is 1625287. The reversal of 1625285 is 5825261.

It can be written as a sum of positive squares in 4 ways, for example, as 643204 + 982081 = 802^2 + 991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1625285 - 2¹⁶ = 1559749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9476 + ... + 9645.

It is an arithmetic number, because the mean of its divisors is an integer number (258147).

2^1625285 is an apocalyptic number.

It is an amenable number.

1625285 is a deficient number, since it is larger than the sum of its proper divisors (439891).

1625285 is a wasteful number, since it uses less digits than its factorization.

1625285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19143.

The product of its digits is 4800, while the sum is 29.

The square root of 1625285 is about 1274.8666596943. The cubic root of 1625285 is about 117.5736071164.

The spelling of 1625285 in words is "one million, six hundred twenty-five thousand, two hundred eighty-five".