125111346220655 has 16 divisors (see below), whose sum is σ = 150417083196480. Its totient is φ = 99900152174592.

The previous prime is 125111346220643. The next prime is 125111346220661. The reversal of 125111346220655 is 556022643111521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125111346220655 - 2¹² = 125111346216559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15311222 + ... + 22014908.

It is an arithmetic number, because the mean of its divisors is an integer number (9401067699780).

Almost surely, 2^{125111346220655} is an apocalyptic number.

125111346220655 is a deficient number, since it is larger than the sum of its proper divisors (25305736975825).

125111346220655 is an equidigital number, since it uses as much as digits as its factorization.

125111346220655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710738.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 125111346220655 in words is "one hundred twenty-five trillion, one hundred eleven billion, three hundred forty-six million, two hundred twenty thousand, six hundred fifty-five".