1890525 has 48 divisors (see below), whose sum is σ = 3860864. Its totient is φ = 794880.

The previous prime is 1890523. The next prime is 1890527. The reversal of 1890525 is 5250981.

It is an interprime number because it is at equal distance from previous prime (1890523) and next prime (1890527).

It is not a de Polignac number, because 1890525 - 2¹ = 1890523 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1890492 and 1890501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6687 + ... + 6963.

2^1890525 is an apocalyptic number.

1890525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1890525 is an abundant number, since it is smaller than the sum of its proper divisors (1970339).

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

1890525 is a wasteful number, since it uses less digits than its factorization.

1890525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1890525 is about 1374.9636358828. The cubic root of 1890525 is about 123.6500059491.

It can be divided in two parts, 1890 and 525, that added together give a triangular number (2415 = T₆₉).

The spelling of 1890525 in words is "one million, eight hundred ninety thousand, five hundred twenty-five".