125000125128 has 32 divisors (see below), whose sum is σ = 347222570400. Its totient is φ = 41666708304.

The previous prime is 125000125123. The next prime is 125000125141. The reversal of 125000125128 is 821521000521.

It is a happy number.

125000125128 is a `hidden beast` number, since 12 + 500 + 0 + 1 + 25 + 128 = 666.

125000125128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (125000125121) 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 7 ways as a sum of consecutive naturals, for example, 289351926 + ... + 289352357.

It is an arithmetic number, because the mean of its divisors is an integer number (10850705325).

Almost surely, 2^125000125128 is an apocalyptic number.

125000125128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

125000125128 is an abundant number, since it is smaller than the sum of its proper divisors (222222445272).

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

125000125128 is a wasteful number, since it uses less digits than its factorization.

125000125128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578704298 (or 578704288 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 125000125128 its reverse (821521000521), we get a palindrome (946521125649).

The spelling of 125000125128 in words is "one hundred twenty-five billion, one hundred twenty-five thousand, one hundred twenty-eight".