126549425 has 24 divisors (see below), whose sum is σ = 161206200. Its totient is φ = 98508800.

The previous prime is 126549421. The next prime is 126549433. The reversal of 126549425 is 524945621.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 19571776 + 106977649 = 4424^2 + 10343^2 .

It is not a de Polignac number, because 126549425 - 2² = 126549421 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126549421) 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 23 ways as a sum of consecutive naturals, for example, 197105 + ... + 197745.

It is an arithmetic number, because the mean of its divisors is an integer number (6716925).

Almost surely, 2^126549425 is an apocalyptic number.

It is an amenable number.

126549425 is a deficient number, since it is larger than the sum of its proper divisors (34656775).

126549425 is a wasteful number, since it uses less digits than its factorization.

126549425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 848 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 126549425 is about 11249.4188738797. The cubic root of 126549425 is about 502.0574224140.

The spelling of 126549425 in words is "one hundred twenty-six million, five hundred forty-nine thousand, four hundred twenty-five".