405053725 has 24 divisors (see below), whose sum is σ = 514173440. Its totient is φ = 316440000.

The previous prime is 405053717. The next prime is 405053729. The reversal of 405053725 is 527350504.

It is not a de Polignac number, because 405053725 - 2³ = 405053717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405053729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229396 + ... + 231154.

Almost surely, 2^405053725 is an apocalyptic number.

It is an amenable number.

405053725 is a deficient number, since it is larger than the sum of its proper divisors (109119715).

405053725 is a wasteful number, since it uses less digits than its factorization.

405053725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 405053725 is about 20125.9465615906. The cubic root of 405053725 is about 739.8963362214.

It can be divided in two parts, 4050 and 53725, that added together give a palindrome (57775).

The spelling of 405053725 in words is "four hundred five million, fifty-three thousand, seven hundred twenty-five".