404012525 has 24 divisors (see below), whose sum is σ = 575498880. Its totient is φ = 275607360.

The previous prime is 404012519. The next prime is 404012537. The reversal of 404012525 is 525210404.

It is a happy number.

It is not a de Polignac number, because 404012525 - 2¹⁰ = 404011501 is a prime.

It is a super-2 number, since 2×404012525² = 326452240713751250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404012525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28616 + ... + 40334.

It is an arithmetic number, because the mean of its divisors is an integer number (23979120).

Almost surely, 2^404012525 is an apocalyptic number.

It is an amenable number.

404012525 is a deficient number, since it is larger than the sum of its proper divisors (171486355).

404012525 is a wasteful number, since it uses less digits than its factorization.

404012525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11933 (or 11928 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 404012525 is about 20100.0628108471. The cubic root of 404012525 is about 739.2618186622.

Adding to 404012525 its reverse (525210404), we get a palindrome (929222929).

The spelling of 404012525 in words is "four hundred four million, twelve thousand, five hundred twenty-five".