125025445 has 4 divisors (see below), whose sum is σ = 150030540. Its totient is φ = 100020352.

The previous prime is 125025431. The next prime is 125025457. The reversal of 125025445 is 544520521.

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 31651876 + 93373569 = 5626^2 + 9663^2 .

It is a cyclic number.

It is not a de Polignac number, because 125025445 - 2⁷ = 125025317 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 12502540 + ... + 12502549.

It is an arithmetic number, because the mean of its divisors is an integer number (37507635).

Almost surely, 2^125025445 is an apocalyptic number.

It is an amenable number.

125025445 is a deficient number, since it is larger than the sum of its proper divisors (25005095).

125025445 is an equidigital number, since it uses as much as digits as its factorization.

125025445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005094.

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

The square root of 125025445 is about 11181.4777645891. The cubic root of 125025445 is about 500.0339243649.

Adding to 125025445 its reverse (544520521), we get a palindrome (669545966).

The spelling of 125025445 in words is "one hundred twenty-five million, twenty-five thousand, four hundred forty-five".