125649957888 has 1056 divisors, whose sum is σ = 480684072960. Its totient is φ = 31890309120.

The previous prime is 125649957887. The next prime is 125649957911. The reversal of 125649957888 is 888759946521.

125649957888 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 49 + 9 + 578 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125649957887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 701954983 + ... + 701955161.

Almost surely, 2^125649957888 is an apocalyptic number.

125649957888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125649957888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240342036480).

125649957888 is an abundant number, since it is smaller than the sum of its proper divisors (355034115072).

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

125649957888 is a wasteful number, since it uses less digits than its factorization.

125649957888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 235 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 72.

The spelling of 125649957888 in words is "one hundred twenty-five billion, six hundred forty-nine million, nine hundred fifty-seven thousand, eight hundred eighty-eight".