125365990988 has 96 divisors (see below), whose sum is σ = 269560704000. Its totient is φ = 50854003200.

The previous prime is 125365990979. The next prime is 125365991011. The reversal of 125365990988 is 889099563521.

It is a super-2 number, since 2×125365990988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 54246353 + ... + 54248663.

It is an arithmetic number, because the mean of its divisors is an integer number (2807924000).

Almost surely, 2^125365990988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125365990988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134780352000).

125365990988 is an abundant number, since it is smaller than the sum of its proper divisors (144194713012).

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

125365990988 is a wasteful number, since it uses less digits than its factorization.

125365990988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4420 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 65.

The spelling of 125365990988 in words is "one hundred twenty-five billion, three hundred sixty-five million, nine hundred ninety thousand, nine hundred eighty-eight".