1225532904 has 16 divisors (see below), whose sum is σ = 3063832320. Its totient is φ = 408510960.

The previous prime is 1225532899. The next prime is 1225532947. The reversal of 1225532904 is 4092355221.

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, 25531912 + ... + 25531959.

It is an arithmetic number, because the mean of its divisors is an integer number (191489520).

Almost surely, 2^1225532904 is an apocalyptic number.

It is an amenable number.

1225532904 is an abundant number, since it is smaller than the sum of its proper divisors (1838299416).

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

1225532904 is a wasteful number, since it uses less digits than its factorization.

1225532904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51063880 (or 51063876 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1225532904 is about 35007.6120865163. The cubic root of 1225532904 is about 1070.1426146997.

The spelling of 1225532904 in words is "one billion, two hundred twenty-five million, five hundred thirty-two thousand, nine hundred four".