125411440 has 80 divisors (see below), whose sum is σ = 363548160. Its totient is φ = 39087360.

The previous prime is 125411393. The next prime is 125411441. The reversal of 125411440 is 44114521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125411441) 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 15 ways as a sum of consecutive naturals, for example, 4020 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (4544352).

Almost surely, 2^125411440 is an apocalyptic number.

125411440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125411440 is an abundant number, since it is smaller than the sum of its proper divisors (238136720).

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

125411440 is a wasteful number, since it uses less digits than its factorization.

125411440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20390 (or 20384 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 125411440 is about 11198.7249274192. The cubic root of 125411440 is about 500.5479858702.

Adding to 125411440 its reverse (44114521), we get a palindrome (169525961).

The spelling of 125411440 in words is "one hundred twenty-five million, four hundred eleven thousand, four hundred forty".