1525218 has 16 divisors (see below), whose sum is σ = 3066336. Its totient is φ = 505760.

The previous prime is 1525217. The next prime is 1525219. The reversal of 1525218 is 8125251.

It is an interprime number because it is at equal distance from previous prime (1525217) and next prime (1525219).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1525217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (191646).

2^1525218 is an apocalyptic number.

1525218 is an abundant number, since it is smaller than the sum of its proper divisors (1541118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525218 is a wasteful number, since it uses less digits than its factorization.

1525218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329.

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

The square root of 1525218 is about 1234.9971659887. The cubic root of 1525218 is about 115.1093603680.

The spelling of 1525218 in words is "one million, five hundred twenty-five thousand, two hundred eighteen".