125205154605 has 24 divisors (see below), whose sum is σ = 224022988800. Its totient is φ = 64622014560.

The previous prime is 125205154561. The next prime is 125205154621. The reversal of 125205154605 is 506451502521.

125205154605 is a `hidden beast` number, since 1 + 25 + 20 + 5 + 1 + 5 + 4 + 605 = 666.

It is not a de Polignac number, because 125205154605 - 2⁹ = 125205154093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125205154605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44875005 + ... + 44877794.

It is an arithmetic number, because the mean of its divisors is an integer number (9334291200).

Almost surely, 2^125205154605 is an apocalyptic number.

125205154605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125205154605 is a deficient number, since it is larger than the sum of its proper divisors (98817834195).

125205154605 is a wasteful number, since it uses less digits than its factorization.

125205154605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89752841 (or 89752838 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 125205154605 in words is "one hundred twenty-five billion, two hundred five million, one hundred fifty-four thousand, six hundred five".