1225144524 has 24 divisors (see below), whose sum is σ = 2859237808. Its totient is φ = 408300480.

The previous prime is 1225144477. The next prime is 1225144537. The reversal of 1225144524 is 4254415221.

It is a junction number, because it is equal to n+sod(n) for n = 1225144491 and 1225144500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107634 + ... + 118470.

Almost surely, 2^1225144524 is an apocalyptic number.

It is an amenable number.

1225144524 is an abundant number, since it is smaller than the sum of its proper divisors (1634093284).

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

1225144524 is a wasteful number, since it uses less digits than its factorization.

1225144524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20265 (or 20263 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 1225144524 is about 35002.0645676794. The cubic root of 1225144524 is about 1070.0295575147.

Adding to 1225144524 its reverse (4254415221), we get a palindrome (5479559745).

The spelling of 1225144524 in words is "one billion, two hundred twenty-five million, one hundred forty-four thousand, five hundred twenty-four".