2138675425 has 6 divisors (see below), whose sum is σ = 2651957558. Its totient is φ = 1710940320.

The previous prime is 2138675423. The next prime is 2138675437. The reversal of 2138675425 is 5245768312.

It can be written as a sum of positive squares in 3 ways, for example, as 702038016 + 1436637409 = 26496^2 + 37903^2 .

It is not a de Polignac number, because 2138675425 - 2¹ = 2138675423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138675423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42773484 + ... + 42773533.

Almost surely, 2^2138675425 is an apocalyptic number.

2138675425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2138675425 is a deficient number, since it is larger than the sum of its proper divisors (513282133).

2138675425 is an equidigital number, since it uses as much as digits as its factorization.

2138675425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85547027 (or 85547022 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 2138675425 is about 46245.8152160820. The cubic root of 2138675425 is about 1288.3928114754.

The spelling of 2138675425 in words is "two billion, one hundred thirty-eight million, six hundred seventy-five thousand, four hundred twenty-five".