125621272 has 64 divisors (see below), whose sum is σ = 281548800. Its totient is φ = 51408000.

The previous prime is 125621267. The next prime is 125621281. The reversal of 125621272 is 272126521.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 125621272.

It is a congruent number.

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, 166897 + ... + 167647.

It is an arithmetic number, because the mean of its divisors is an integer number (4399200).

Almost surely, 2^125621272 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 125621272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140774400).

125621272 is an abundant number, since it is smaller than the sum of its proper divisors (155927528).

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

125621272 is a wasteful number, since it uses less digits than its factorization.

125621272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 892 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 125621272 is about 11208.0895785143. The cubic root of 125621272 is about 500.8269940741.

Adding to 125621272 its reverse (272126521), we get a palindrome (397747793).

The spelling of 125621272 in words is "one hundred twenty-five million, six hundred twenty-one thousand, two hundred seventy-two".