1985525 has 12 divisors (see below), whose sum is σ = 2520672. Its totient is φ = 1550640.

The previous prime is 1985513. The next prime is 1985537. The reversal of 1985525 is 5255891.

It is an interprime number because it is at equal distance from previous prime (1985513) and next prime (1985537).

It is not a de Polignac number, because 1985525 - 2⁴ = 1985509 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 11 ways as a sum of consecutive naturals, for example, 152 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (210056).

2^1985525 is an apocalyptic number.

It is an amenable number.

1985525 is a deficient number, since it is larger than the sum of its proper divisors (535147).

1985525 is a wasteful number, since it uses less digits than its factorization.

1985525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1895 counting only the distinct ones).

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

The square root of 1985525 is about 1409.0865835711. The cubic root of 1985525 is about 125.6874127797.

The spelling of 1985525 in words is "one million, nine hundred eighty-five thousand, five hundred twenty-five".