125521448 has 64 divisors (see below), whose sum is σ = 269304000. Its totient is φ = 54369792.

The previous prime is 125521433. The next prime is 125521463. The reversal of 125521448 is 844125521.

It is an interprime number because it is at equal distance from previous prime (125521433) and next prime (125521463).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274436 + ... + 274892.

It is an arithmetic number, because the mean of its divisors is an integer number (4207875).

Almost surely, 2^125521448 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 125521448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134652000).

125521448 is an abundant number, since it is smaller than the sum of its proper divisors (143782552).

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

125521448 is a wasteful number, since it uses less digits than its factorization.

125521448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 630 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

The square root of 125521448 is about 11203.6354813962. The cubic root of 125521448 is about 500.6942994503.

Adding to 125521448 its reverse (844125521), we get a palindrome (969646969).

The spelling of 125521448 in words is "one hundred twenty-five million, five hundred twenty-one thousand, four hundred forty-eight".