15553425427 has 2 divisors, whose sum is σ = 15553425428. Its totient is φ = 15553425426.

The previous prime is 15553425379. The next prime is 15553425491. The reversal of 15553425427 is 72452435551.

15553425427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15553425427 - 2⁷ = 15553425299 is a prime.

It is not a weakly prime, because it can be changed into another prime (15553425127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776712713 + 7776712714.

It is an arithmetic number, because the mean of its divisors is an integer number (7776712714).

Almost surely, 2^15553425427 is an apocalyptic number.

15553425427 is a deficient number, since it is larger than the sum of its proper divisors (1).

15553425427 is an equidigital number, since it uses as much as digits as its factorization.

15553425427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840000, while the sum is 43.

The spelling of 15553425427 in words is "fifteen billion, five hundred fifty-three million, four hundred twenty-five thousand, four hundred twenty-seven".