125425045 has 4 divisors (see below), whose sum is σ = 150510060. Its totient is φ = 100340032.

The previous prime is 125425043. The next prime is 125425051. The reversal of 125425045 is 540524521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540524521 = 19 ⋅28448659.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 107371044 = 4249^2 + 10362^2 .

It is a cyclic number.

It is not a de Polignac number, because 125425045 - 2¹ = 125425043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125425043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12542500 + ... + 12542509.

It is an arithmetic number, because the mean of its divisors is an integer number (37627515).

Almost surely, 2^125425045 is an apocalyptic number.

It is an amenable number.

125425045 is a deficient number, since it is larger than the sum of its proper divisors (25085015).

125425045 is an equidigital number, since it uses as much as digits as its factorization.

125425045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25085014.

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

The square root of 125425045 is about 11199.3323461714. The cubic root of 125425045 is about 500.5660855192.

Adding to 125425045 its reverse (540524521), we get a palindrome (665949566).

The spelling of 125425045 in words is "one hundred twenty-five million, four hundred twenty-five thousand, forty-five".