125019904 has 72 divisors (see below), whose sum is σ = 275940000. Its totient is φ = 56229888.

The previous prime is 125019889. The next prime is 125019907. The reversal of 125019904 is 409910521.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125019907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99472 + ... + 100720.

It is an arithmetic number, because the mean of its divisors is an integer number (3832500).

Almost surely, 2^125019904 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 125019904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137970000).

125019904 is an abundant number, since it is smaller than the sum of its proper divisors (150920096).

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

125019904 is a wasteful number, since it uses less digits than its factorization.

125019904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 125019904 is about 11181.2299860078. The cubic root of 125019904 is about 500.0265372582.

The spelling of 125019904 in words is "one hundred twenty-five million, nineteen thousand, nine hundred four".