2500025000261 has 16 divisors (see below), whose sum is σ = 2650679046144. Its totient is φ = 2349772187904.

The previous prime is 2500025000237. The next prime is 2500025000269. The reversal of 2500025000261 is 1620005200052.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500025000261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500025000269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44007071 + ... + 44063843.

It is an arithmetic number, because the mean of its divisors is an integer number (165667440384).

Almost surely, 2^{2500025000261} is an apocalyptic number.

It is an amenable number.

2500025000261 is a deficient number, since it is larger than the sum of its proper divisors (150654045883).

2500025000261 is a wasteful number, since it uses less digits than its factorization.

2500025000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60260.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 2500025000261 in words is "two trillion, five hundred billion, twenty-five million, two hundred sixty-one", and thus it is an aban number.