201780425 has 48 divisors (see below), whose sum is σ = 320491392. Its totient is φ = 122342400.

The previous prime is 201780391. The next prime is 201780427. The reversal of 201780425 is 524087102.

It is not a de Polignac number, because 201780425 - 2¹⁶ = 201714889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201780427) 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, 69809 + ... + 72641.

It is an arithmetic number, because the mean of its divisors is an integer number (6676904).

Almost surely, 2^201780425 is an apocalyptic number.

201780425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201780425 is a deficient number, since it is larger than the sum of its proper divisors (118710967).

201780425 is a wasteful number, since it uses less digits than its factorization.

201780425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2893 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 201780425 is about 14204.9436816905. The cubic root of 201780425 is about 586.5337550074.

The spelling of 201780425 in words is "two hundred one million, seven hundred eighty thousand, four hundred twenty-five".