404165525 has 12 divisors (see below), whose sum is σ = 501417312. Its totient is φ = 323169840.

The previous prime is 404165521. The next prime is 404165537. The reversal of 404165525 is 525561404.

It is not a de Polignac number, because 404165525 - 2² = 404165521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404165491 and 404165500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404165521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84344 + ... + 89006.

It is an arithmetic number, because the mean of its divisors is an integer number (41784776).

Almost surely, 2^404165525 is an apocalyptic number.

It is an amenable number.

404165525 is a deficient number, since it is larger than the sum of its proper divisors (97251787).

404165525 is a wasteful number, since it uses less digits than its factorization.

404165525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8140 (or 8135 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 404165525 is about 20103.8684088411. The cubic root of 404165525 is about 739.3551266468.

The spelling of 404165525 in words is "four hundred four million, one hundred sixty-five thousand, five hundred twenty-five".