2505161651 has 2 divisors, whose sum is σ = 2505161652. Its totient is φ = 2505161650.

The previous prime is 2505161611. The next prime is 2505161663. The reversal of 2505161651 is 1561615052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505161651 - 2²² = 2500967347 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505161611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252580825 + 1252580826.

It is an arithmetic number, because the mean of its divisors is an integer number (1252580826).

Almost surely, 2^2505161651 is an apocalyptic number.

2505161651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505161651 is an equidigital number, since it uses as much as digits as its factorization.

2505161651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 2505161651 is about 50051.5898948275. The cubic root of 2505161651 is about 1358.1422246230.

The spelling of 2505161651 in words is "two billion, five hundred five million, one hundred sixty-one thousand, six hundred fifty-one".