125224436 has 18 divisors (see below), whose sum is σ = 226917810. Its totient is φ = 60394992.

The previous prime is 125224433. The next prime is 125224441. The reversal of 125224436 is 634422521.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 17272336 = 10390^2 + 4156^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 125224399 and 125224408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125224433) 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 5 ways as a sum of consecutive naturals, for example, 120005 + ... + 121043.

It is an arithmetic number, because the mean of its divisors is an integer number (12606545).

Almost surely, 2^125224436 is an apocalyptic number.

It is an amenable number.

125224436 is a deficient number, since it is larger than the sum of its proper divisors (101693374).

125224436 is an equidigital number, since it uses as much as digits as its factorization.

125224436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 1070 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 125224436 is about 11190.3724692255. The cubic root of 125224436 is about 500.2990690797.

Multiplying 125224436 by its sum of digits (29), we get a square (3631508644 = 60262²).

125224436 divided by its sum of digits (29) gives a square (4318084 = 2078²).

Adding to 125224436 its reverse (634422521), we get a palindrome (759646957).

The spelling of 125224436 in words is "one hundred twenty-five million, two hundred twenty-four thousand, four hundred thirty-six".