1525889 has 4 divisors (see below), whose sum is σ = 1592256. Its totient is φ = 1459524.

The previous prime is 1525877. The next prime is 1525921. The reversal of 1525889 is 9885251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9885251 = 2957 ⋅3343.

It is a cyclic number.

It is not a de Polignac number, because 1525889 - 2⁴ = 1525873 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 33149 + ... + 33194.

It is an arithmetic number, because the mean of its divisors is an integer number (398064).

2^1525889 is an apocalyptic number.

It is an amenable number.

1525889 is a deficient number, since it is larger than the sum of its proper divisors (66367).

1525889 is an equidigital number, since it uses as much as digits as its factorization.

1525889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66366.

The product of its digits is 28800, while the sum is 38.

The square root of 1525889 is about 1235.2687966593. The cubic root of 1525889 is about 115.1262381863.

The spelling of 1525889 in words is "one million, five hundred twenty-five thousand, eight hundred eighty-nine".