1225020424 has 16 divisors (see below), whose sum is σ = 2307802320. Its totient is φ = 609606480.

The previous prime is 1225020413. The next prime is 1225020437. The reversal of 1225020424 is 4240205221.

It is a junction number, because it is equal to n+sod(n) for n = 1225020395 and 1225020404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361174 + ... + 364549.

It is an arithmetic number, because the mean of its divisors is an integer number (144237645).

Almost surely, 2^1225020424 is an apocalyptic number.

It is an amenable number.

1225020424 is a deficient number, since it is larger than the sum of its proper divisors (1082781896).

1225020424 is a wasteful number, since it uses less digits than its factorization.

1225020424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725940 (or 725936 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1225020424 is about 35000.2917702124. The cubic root of 1225020424 is about 1069.9934270420.

Adding to 1225020424 its reverse (4240205221), we get a palindrome (5465225645).

The spelling of 1225020424 in words is "one billion, two hundred twenty-five million, twenty thousand, four hundred twenty-four".