1525085 has 4 divisors (see below), whose sum is σ = 1830108. Its totient is φ = 1220064.

The previous prime is 1525067. The next prime is 1525093. The reversal of 1525085 is 5805251.

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 284089 + 1240996 = 533^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525085 - 2⁶ = 1525021 is a prime.

It is a Duffinian number.

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, 152504 + ... + 152513.

It is an arithmetic number, because the mean of its divisors is an integer number (457527).

2^1525085 is an apocalyptic number.

It is an amenable number.

1525085 is a deficient number, since it is larger than the sum of its proper divisors (305023).

1525085 is an equidigital number, since it uses as much as digits as its factorization.

1525085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305022.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1525085 is about 1234.9433185373. The cubic root of 1525085 is about 115.1060144004.

The spelling of 1525085 in words is "one million, five hundred twenty-five thousand, eighty-five".