125345204505 has 12 divisors (see below), whose sum is σ = 217265021220. Its totient is φ = 66850775712.

The previous prime is 125345204459. The next prime is 125345204519. The reversal of 125345204505 is 505402543521.

125345204505 is a `hidden beast` number, since 125 + 3 + 4 + 5 + 20 + 4 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21284767449 + 104060437056 = 145893^2 + 322584^2 .

It is not a de Polignac number, because 125345204505 - 2⁹ = 125345203993 is a prime.

It is a super-2 number, since 2×125345204505² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125345204505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1392724450 + ... + 1392724539.

It is an arithmetic number, because the mean of its divisors is an integer number (18105418435).

Almost surely, 2^125345204505 is an apocalyptic number.

125345204505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125345204505 is a deficient number, since it is larger than the sum of its proper divisors (91919816715).

125345204505 is a wasteful number, since it uses less digits than its factorization.

125345204505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785449000 (or 2785448997 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 125345204505 in words is "one hundred twenty-five billion, three hundred forty-five million, two hundred four thousand, five hundred five".