125288139440 has 20 divisors (see below), whose sum is σ = 291294924384. Its totient is φ = 50115255744.

The previous prime is 125288139359. The next prime is 125288139443. The reversal of 125288139440 is 44931882521.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (125288139443) 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 3 ways as a sum of consecutive naturals, for example, 783050792 + ... + 783050951.

Almost surely, 2^125288139440 is an apocalyptic number.

125288139440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125288139440 is an abundant number, since it is smaller than the sum of its proper divisors (166006784944).

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

125288139440 is a wasteful number, since it uses less digits than its factorization.

125288139440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566101756 (or 1566101750 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 125288139440 in words is "one hundred twenty-five billion, two hundred eighty-eight million, one hundred thirty-nine thousand, four hundred forty".