404312525 has 6 divisors (see below), whose sum is σ = 501347562. Its totient is φ = 323450000.

The previous prime is 404312437. The next prime is 404312527. The reversal of 404312525 is 525213404.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29735209 + 374577316 = 5453^2 + 19354^2 .

It is not a de Polignac number, because 404312525 - 2²⁶ = 337203661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404312494 and 404312503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404312527) 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 5 ways as a sum of consecutive naturals, for example, 8086226 + ... + 8086275.

It is an arithmetic number, because the mean of its divisors is an integer number (83557927).

Almost surely, 2^404312525 is an apocalyptic number.

It is an amenable number.

404312525 is a deficient number, since it is larger than the sum of its proper divisors (97035037).

404312525 is a wasteful number, since it uses less digits than its factorization.

404312525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16172511 (or 16172506 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 404312525 is about 20107.5240892557. The cubic root of 404312525 is about 739.4447533161. Note that the first 3 decimals are identical.

Adding to 404312525 its reverse (525213404), we get a palindrome (929525929).

The spelling of 404312525 in words is "four hundred four million, three hundred twelve thousand, five hundred twenty-five".