184640425 has 12 divisors (see below), whose sum is σ = 234539676. Its totient is φ = 144108800.

The previous prime is 184640413. The next prime is 184640429. The reversal of 184640425 is 524046481.

It can be written as a sum of positive squares in 6 ways, for example, as 1065024 + 183575401 = 1032^2 + 13549^2 .

It is not a de Polignac number, because 184640425 - 2⁹ = 184639913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184640429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89044 + ... + 91093.

It is an arithmetic number, because the mean of its divisors is an integer number (19544973).

Almost surely, 2^184640425 is an apocalyptic number.

It is an amenable number.

184640425 is a deficient number, since it is larger than the sum of its proper divisors (49899251).

184640425 is a wasteful number, since it uses less digits than its factorization.

184640425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180188 (or 180183 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 184640425 is about 13588.2458396954. The cubic root of 184640425 is about 569.4325171847.

The spelling of 184640425 in words is "one hundred eighty-four million, six hundred forty thousand, four hundred twenty-five".