1225544032 has 24 divisors (see below), whose sum is σ = 2468903976. Its totient is φ = 598520832.

The previous prime is 1225544027. The next prime is 1225544039. The reversal of 1225544032 is 2304455221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225544039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443953 + ... + 446704.

It is an arithmetic number, because the mean of its divisors is an integer number (102870999).

Almost surely, 2^1225544032 is an apocalyptic number.

It is an amenable number.

1225544032 is an abundant number, since it is smaller than the sum of its proper divisors (1243359944).

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

1225544032 is an equidigital number, since it uses as much as digits as its factorization.

1225544032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890710 (or 890702 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1225544032 is about 35007.7710230172. The cubic root of 1225544032 is about 1070.1458537018.

Adding to 1225544032 its reverse (2304455221), we get a palindrome (3529999253).

The spelling of 1225544032 in words is "one billion, two hundred twenty-five million, five hundred forty-four thousand, thirty-two".