180945825 has 24 divisors (see below), whose sum is σ = 304075776. Its totient is φ = 94920000.

The previous prime is 180945823. The next prime is 180945827. The reversal of 180945825 is 528549081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (180945823) and next prime (180945827).

It is not a de Polignac number, because 180945825 - 2¹ = 180945823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (180945823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15201 + ... + 24350.

It is an arithmetic number, because the mean of its divisors is an integer number (12669824).

Almost surely, 2^180945825 is an apocalyptic number.

180945825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

180945825 is a deficient number, since it is larger than the sum of its proper divisors (123129951).

180945825 is a wasteful number, since it uses less digits than its factorization.

180945825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39625 (or 39620 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 180945825 is about 13451.6104983753. The cubic root of 180945825 is about 565.6088406401.

The spelling of 180945825 in words is "one hundred eighty million, nine hundred forty-five thousand, eight hundred twenty-five".