125421648 has 160 divisors (see below), whose sum is σ = 380868480. Its totient is φ = 35143680.

The previous prime is 125421643. The next prime is 125421661. The reversal of 125421648 is 846124521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125421643) 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 31 ways as a sum of consecutive naturals, for example, 798786 + ... + 798942.

It is an arithmetic number, because the mean of its divisors is an integer number (2380428).

Almost surely, 2^125421648 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 125421648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190434240).

125421648 is an abundant number, since it is smaller than the sum of its proper divisors (255446832).

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

125421648 is a wasteful number, since it uses less digits than its factorization.

125421648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 125421648 is about 11199.1806843179. The cubic root of 125421648 is about 500.5615663836.

The spelling of 125421648 in words is "one hundred twenty-five million, four hundred twenty-one thousand, six hundred forty-eight".