1525859 has 2 divisors, whose sum is σ = 1525860. Its totient is φ = 1525858.

The previous prime is 1525837. The next prime is 1525873. The reversal of 1525859 is 9585251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1525859 - 2¹² = 1521763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1525819) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762929 + 762930.

It is an arithmetic number, because the mean of its divisors is an integer number (762930).

2^1525859 is an apocalyptic number.

1525859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525859 is an equidigital number, since it uses as much as digits as its factorization.

1525859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 35.

The square root of 1525859 is about 1235.2566534935. The cubic root of 1525859 is about 115.1254836950.

The spelling of 1525859 in words is "one million, five hundred twenty-five thousand, eight hundred fifty-nine".