1604744025 has 12 divisors (see below), whose sum is σ = 2653176912. Its totient is φ = 855863440.

The previous prime is 1604744003. The next prime is 1604744027. The reversal of 1604744025 is 5204474061.

It is not a de Polignac number, because 1604744025 - 2⁸ = 1604743769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604744027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10698219 + ... + 10698368.

It is an arithmetic number, because the mean of its divisors is an integer number (221098076).

Almost surely, 2^1604744025 is an apocalyptic number.

1604744025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1604744025 is a deficient number, since it is larger than the sum of its proper divisors (1048432887).

1604744025 is a wasteful number, since it uses less digits than its factorization.

1604744025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21396600 (or 21396595 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1604744025 is about 40059.2564209572. The cubic root of 1604744025 is about 1170.7619224468.

The spelling of 1604744025 in words is "one billion, six hundred four million, seven hundred forty-four thousand, twenty-five".