1825215 has 16 divisors (see below), whose sum is σ = 3337728. Its totient is φ = 834336.

The previous prime is 1825207. The next prime is 1825217. The reversal of 1825215 is 5125281.

It is not a de Polignac number, because 1825215 - 2³ = 1825207 is a prime.

1825215 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8587 + ... + 8796.

It is an arithmetic number, because the mean of its divisors is an integer number (208608).

2^1825215 is an apocalyptic number.

1825215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1825215 is a deficient number, since it is larger than the sum of its proper divisors (1512513).

1825215 is a wasteful number, since it uses less digits than its factorization.

1825215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17398.

The product of its digits is 800, while the sum is 24.

The square root of 1825215 is about 1351.0051813372. The cubic root of 1825215 is about 122.2094181567.

The spelling of 1825215 in words is "one million, eight hundred twenty-five thousand, two hundred fifteen".