25030000161 has 64 divisors (see below), whose sum is σ = 38769561600. Its totient is φ = 15947813952.

The previous prime is 25030000139. The next prime is 25030000211. The reversal of 25030000161 is 16100003052.

25030000161 is a `hidden beast` number, since 2 + 503 + 0 + 0 + 0 + 0 + 161 = 666.

It is not a de Polignac number, because 25030000161 - 2¹¹ = 25029998113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25030000561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10502376 + ... + 10504758.

It is an arithmetic number, because the mean of its divisors is an integer number (605774400).

Almost surely, 2^25030000161 is an apocalyptic number.

It is an amenable number.

25030000161 is a deficient number, since it is larger than the sum of its proper divisors (13739561439).

25030000161 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (25030000160) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2627).

25030000161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The spelling of 25030000161 in words is "twenty-five billion, thirty million, one hundred sixty-one", and thus it is an aban number.