155525506379 has 2 divisors, whose sum is σ = 155525506380. Its totient is φ = 155525506378.

The previous prime is 155525506333. The next prime is 155525506427. The reversal of 155525506379 is 973605525551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155525506379 - 2¹² = 155525502283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155525506379.

It is not a weakly prime, because it can be changed into another prime (155525506309) 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, 77762753189 + 77762753190.

It is an arithmetic number, because the mean of its divisors is an integer number (77762753190).

Almost surely, 2^155525506379 is an apocalyptic number.

155525506379 is a deficient number, since it is larger than the sum of its proper divisors (1).

155525506379 is an equidigital number, since it uses as much as digits as its factorization.

155525506379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7087500, while the sum is 53.

The spelling of 155525506379 in words is "one hundred fifty-five billion, five hundred twenty-five million, five hundred six thousand, three hundred seventy-nine".