2164550425 has 12 divisors (see below), whose sum is σ = 2690034300. Its totient is φ = 1727774720.

The previous prime is 2164550419. The next prime is 2164550429. The reversal of 2164550425 is 5240554612.

It can be written as a sum of positive squares in 6 ways, for example, as 444872464 + 1719677961 = 21092^2 + 41469^2 .

It is not a de Polignac number, because 2164550425 - 2⁵ = 2164550393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2164550429) 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 11 ways as a sum of consecutive naturals, for example, 85192 + ... + 107641.

It is an arithmetic number, because the mean of its divisors is an integer number (224169525).

Almost surely, 2^2164550425 is an apocalyptic number.

2164550425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164550425 is a deficient number, since it is larger than the sum of its proper divisors (525483875).

2164550425 is a wasteful number, since it uses less digits than its factorization.

2164550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193292 (or 193287 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 2164550425 is about 46524.7291770731. The cubic root of 2164550425 is about 1293.5679174618.

The spelling of 2164550425 in words is "two billion, one hundred sixty-four million, five hundred fifty thousand, four hundred twenty-five".