1525818 has 32 divisors (see below), whose sum is σ = 3694464. Its totient is φ = 410112.

The previous prime is 1525787. The next prime is 1525819. The reversal of 1525818 is 8185251.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1525819) 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, 355 + ... + 1782.

It is an arithmetic number, because the mean of its divisors is an integer number (115452).

2^1525818 is an apocalyptic number.

1525818 is an abundant number, since it is smaller than the sum of its proper divisors (2168646).

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

1525818 is a wasteful number, since it uses less digits than its factorization.

1525818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its digits is 3200, while the sum is 30.

The square root of 1525818 is about 1235.2400576406. The cubic root of 1525818 is about 115.1244525410.

The spelling of 1525818 in words is "one million, five hundred twenty-five thousand, eight hundred eighteen".