125550000 has 300 divisors, whose sum is σ = 468844992. Its totient is φ = 32400000.

The previous prime is 125549989. The next prime is 125550001. The reversal of 125550000 is 55521.

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (125550001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4049985 + ... + 4050015.

Almost surely, 2^125550000 is an apocalyptic number.

125550000 is a gapful number since it is divisible by the number (10) 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 125550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234422496).

125550000 is an abundant number, since it is smaller than the sum of its proper divisors (343294992).

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

125550000 is an frugal number, since it uses more digits than its factorization.

125550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 125550000 is about 11204.9096381899. The cubic root of 125550000 is about 500.7322603992.

The spelling of 125550000 in words is "one hundred twenty-five million, five hundred fifty thousand".