125641440 has 72 divisors (see below), whose sum is σ = 428756328. Its totient is φ = 33504000.

The previous prime is 125641421. The next prime is 125641447. The reversal of 125641440 is 44146521.

125641440 is a `hidden beast` number, since 12 + 5 + 641 + 4 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125641447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42186 + ... + 45065.

It is an arithmetic number, because the mean of its divisors is an integer number (5954949).

Almost surely, 2^125641440 is an apocalyptic number.

125641440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125641440 is an abundant number, since it is smaller than the sum of its proper divisors (303114888).

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

125641440 is a wasteful number, since it uses less digits than its factorization.

125641440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87272 (or 87261 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 125641440 is about 11208.9892497049. The cubic root of 125641440 is about 500.8537945731.

Adding to 125641440 its reverse (44146521), we get a palindrome (169787961).

The spelling of 125641440 in words is "one hundred twenty-five million, six hundred forty-one thousand, four hundred forty".