405502412025 has 24 divisors (see below), whose sum is σ = 681421328704. Its totient is φ = 212722574400.

The previous prime is 405502412023. The next prime is 405502412041. The reversal of 405502412025 is 520214205504.

It is not a de Polignac number, because 405502412025 - 2¹ = 405502412023 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 405502411983 and 405502412001.

It is not an unprimeable number, because it can be changed into a prime (405502412023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44312629 + ... + 44321778.

Almost surely, 2^405502412025 is an apocalyptic number.

It is an amenable number.

405502412025 is a deficient number, since it is larger than the sum of its proper divisors (275918916679).

405502412025 is a wasteful number, since it uses less digits than its factorization.

405502412025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88634481 (or 88634476 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 405502412025 its reverse (520214205504), we get a palindrome (925716617529).

The spelling of 405502412025 in words is "four hundred five billion, five hundred two million, four hundred twelve thousand, twenty-five".