125454205 has 4 divisors (see below), whose sum is σ = 150545052. Its totient is φ = 100363360.

The previous prime is 125454181. The next prime is 125454209. The reversal of 125454205 is 502454521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502454521 = 3709 ⋅135469.

It can be written as a sum of positive squares in 2 ways, for example, as 81920601 + 43533604 = 9051^2 + 6598^2 .

It is not a de Polignac number, because 125454205 - 2¹¹ = 125452157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125454209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12545416 + ... + 12545425.

It is an arithmetic number, because the mean of its divisors is an integer number (37636263).

Almost surely, 2^125454205 is an apocalyptic number.

It is an amenable number.

125454205 is a deficient number, since it is larger than the sum of its proper divisors (25090847).

125454205 is an equidigital number, since it uses as much as digits as its factorization.

125454205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25090846.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 125454205 is about 11200.6341338337. The cubic root of 125454205 is about 500.6048746250.

The spelling of 125454205 in words is "one hundred twenty-five million, four hundred fifty-four thousand, two hundred five".