2155266625487 has 2 divisors, whose sum is σ = 2155266625488. Its totient is φ = 2155266625486.

The previous prime is 2155266625459. The next prime is 2155266625531. The reversal of 2155266625487 is 7845266625512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2155266625487 - 2¹⁰ = 2155266624463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155266615487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077633312743 + 1077633312744.

It is an arithmetic number, because the mean of its divisors is an integer number (1077633312744).

Almost surely, 2^{2155266625487} is an apocalyptic number.

2155266625487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155266625487 is an equidigital number, since it uses as much as digits as its factorization.

2155266625487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384000, while the sum is 59.

The spelling of 2155266625487 in words is "two trillion, one hundred fifty-five billion, two hundred sixty-six million, six hundred twenty-five thousand, four hundred eighty-seven".