1605225396 has 24 divisors (see below), whose sum is σ = 3801431200. Its totient is φ = 527088672.

The previous prime is 1605225383. The next prime is 1605225403. The reversal of 1605225396 is 6935225061.

It is a congruent number.

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, 997471 + ... + 999078.

Almost surely, 2^1605225396 is an apocalyptic number.

It is an amenable number.

1605225396 is an abundant number, since it is smaller than the sum of its proper divisors (2196205804).

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

1605225396 is a wasteful number, since it uses less digits than its factorization.

1605225396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996623 (or 1996621 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1605225396 is about 40065.2642072906. The cubic root of 1605225396 is about 1170.8789742396.

The spelling of 1605225396 in words is "one billion, six hundred five million, two hundred twenty-five thousand, three hundred ninety-six".