125043137680 has 40 divisors (see below), whose sum is σ = 303365529792. Its totient is φ = 47842591104.

The previous prime is 125043137671. The next prime is 125043137689. The reversal of 125043137680 is 86731340521.

It is an interprime number because it is at equal distance from previous prime (125043137671) and next prime (125043137689).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (125043137689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33977274 + ... + 33980953.

Almost surely, 2^125043137680 is an apocalyptic number.

125043137680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125043137680 is an abundant number, since it is smaller than the sum of its proper divisors (178322392112).

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

125043137680 is a wasteful number, since it uses less digits than its factorization.

125043137680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67958263 (or 67958257 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 125043137680 in words is "one hundred twenty-five billion, forty-three million, one hundred thirty-seven thousand, six hundred eighty".