2140625161 has 2 divisors, whose sum is σ = 2140625162. Its totient is φ = 2140625160.

The previous prime is 2140625153. The next prime is 2140625219. The reversal of 2140625161 is 1615260412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2047019536 + 93605625 = 45244^2 + 9675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140625161 - 2³ = 2140625153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2140625561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070312580 + 1070312581.

It is an arithmetic number, because the mean of its divisors is an integer number (1070312581).

Almost surely, 2^2140625161 is an apocalyptic number.

It is an amenable number.

2140625161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140625161 is an equidigital number, since it uses as much as digits as its factorization.

2140625161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2140625161 is about 46266.8905482095. The cubic root of 2140625161 is about 1288.7842161795.

Adding to 2140625161 its reverse (1615260412), we get a palindrome (3755885573).

The spelling of 2140625161 in words is "two billion, one hundred forty million, six hundred twenty-five thousand, one hundred sixty-one".