125455660155 has 144 divisors (see below), whose sum is σ = 273542106240. Its totient is φ = 52828360704.

The previous prime is 125455660117. The next prime is 125455660157. The reversal of 125455660155 is 551066554521.

It is a happy number.

125455660155 is a `hidden beast` number, since 1 + 2 + 545 + 56 + 6 + 0 + 1 + 55 = 666.

It is not a de Polignac number, because 125455660155 - 2⁹ = 125455659643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 125455660155.

It is not an unprimeable number, because it can be changed into a prime (125455660157) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1726191 + ... + 1797399.

It is an arithmetic number, because the mean of its divisors is an integer number (1899597960).

Almost surely, 2^125455660155 is an apocalyptic number.

125455660155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125455660155 is an abundant number, since it is smaller than the sum of its proper divisors (148086446085).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125455660155 is a wasteful number, since it uses less digits than its factorization.

125455660155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71298 (or 71288 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 125455660155 in words is "one hundred twenty-five billion, four hundred fifty-five million, six hundred sixty thousand, one hundred fifty-five".