126331025 has 12 divisors (see below), whose sum is σ = 156846732. Its totient is φ = 100938240.

The previous prime is 126331021. The next prime is 126331043. The reversal of 126331025 is 520133621.

It can be written as a sum of positive squares in 6 ways, for example, as 2298256 + 124032769 = 1516^2 + 11137^2 .

It is not a de Polignac number, because 126331025 - 2² = 126331021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126331021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 20729 + ... + 26121.

It is an arithmetic number, because the mean of its divisors is an integer number (13070561).

Almost surely, 2^126331025 is an apocalyptic number.

It is an amenable number.

126331025 is a deficient number, since it is larger than the sum of its proper divisors (30515707).

126331025 is an equidigital number, since it uses as much as digits as its factorization.

126331025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340 (or 6335 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 126331025 is about 11239.7075139881. The cubic root of 126331025 is about 501.7684378808.

Adding to 126331025 its reverse (520133621), we get a palindrome (646464646).

The spelling of 126331025 in words is "one hundred twenty-six million, three hundred thirty-one thousand, twenty-five".