1225124404 has 12 divisors (see below), whose sum is σ = 2450248864. Its totient is φ = 525053304.

The previous prime is 1225124399. The next prime is 1225124449. The reversal of 1225124404 is 4044215221.

1225124404 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21877194 + ... + 21877249.

Almost surely, 2^1225124404 is an apocalyptic number.

1225124404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1225124404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1225124404 is a wasteful number, since it uses less digits than its factorization.

1225124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43754454 (or 43754452 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1225124404 is about 35001.7771548817. Note that the first 3 decimals coincide. The cubic root of 1225124404 is about 1070.0236999438.

Adding to 1225124404 its reverse (4044215221), we get a palindrome (5269339625).

The spelling of 1225124404 in words is "one billion, two hundred twenty-five million, one hundred twenty-four thousand, four hundred four".