1225821352 has 32 divisors (see below), whose sum is σ = 2669829120. Its totient is φ = 516738240.

The previous prime is 1225821343. The next prime is 1225821371. The reversal of 1225821352 is 2531285221.

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, 176008 + ... + 182839.

It is an arithmetic number, because the mean of its divisors is an integer number (83432160).

Almost surely, 2^1225821352 is an apocalyptic number.

It is an amenable number.

1225821352 is an abundant number, since it is smaller than the sum of its proper divisors (1444007768).

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

1225821352 is a wasteful number, since it uses less digits than its factorization.

1225821352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358921 (or 358917 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1225821352 is about 35011.7316338395. The cubic root of 1225821352 is about 1070.2265662829.

The spelling of 1225821352 in words is "one billion, two hundred twenty-five million, eight hundred twenty-one thousand, three hundred fifty-two".