125544440 has 32 divisors (see below), whose sum is σ = 322829280. Its totient is φ = 43043712.

The previous prime is 125544437. The next prime is 125544449. The reversal of 125544440 is 44445521.

It is a super-2 number, since 2×125544440² = 31522812829827200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125544449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223907 + ... + 224466.

It is an arithmetic number, because the mean of its divisors is an integer number (10088415).

Almost surely, 2^125544440 is an apocalyptic number.

125544440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125544440 is an abundant number, since it is smaller than the sum of its proper divisors (197284840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125544440 is a wasteful number, since it uses less digits than its factorization.

125544440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448391 (or 448387 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 125544440 is about 11204.6615299169. The cubic root of 125544440 is about 500.7248686231.

Adding to 125544440 its reverse (44445521), we get a palindrome (169989961).

The spelling of 125544440 in words is "one hundred twenty-five million, five hundred forty-four thousand, four hundred forty".