2500861087 has 2 divisors, whose sum is σ = 2500861088. Its totient is φ = 2500861086.

The previous prime is 2500861067. The next prime is 2500861141. The reversal of 2500861087 is 7801680052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2500861087 - 2¹⁹ = 2500336799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500861057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250430543 + 1250430544.

It is an arithmetic number, because the mean of its divisors is an integer number (1250430544).

Almost surely, 2^2500861087 is an apocalyptic number.

2500861087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500861087 is an equidigital number, since it uses as much as digits as its factorization.

2500861087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 2500861087 is about 50008.6101286568. The cubic root of 2500861087 is about 1357.3646137254.

The spelling of 2500861087 in words is "two billion, five hundred million, eight hundred sixty-one thousand, eighty-seven".