125456545 has 4 divisors (see below), whose sum is σ = 150547860. Its totient is φ = 100365232.

The previous prime is 125456521. The next prime is 125456587. The reversal of 125456545 is 545654521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32353344 + 93103201 = 5688^2 + 9649^2 .

It is a cyclic number.

It is not a de Polignac number, because 125456545 - 2¹³ = 125448353 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12545650 + ... + 12545659.

It is an arithmetic number, because the mean of its divisors is an integer number (37636965).

Almost surely, 2^125456545 is an apocalyptic number.

It is an amenable number.

125456545 is a deficient number, since it is larger than the sum of its proper divisors (25091315).

125456545 is an equidigital number, since it uses as much as digits as its factorization.

125456545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25091314.

The product of its digits is 120000, while the sum is 37.

The square root of 125456545 is about 11200.7385917180. The cubic root of 125456545 is about 500.6079870705.

The spelling of 125456545 in words is "one hundred twenty-five million, four hundred fifty-six thousand, five hundred forty-five".