403992225 has 96 divisors (see below), whose sum is σ = 913552640. Its totient is φ = 170449920.

The previous prime is 403992221. The next prime is 403992227. The reversal of 403992225 is 522299304.

403992225 is a `hidden beast` number, since 40 + 399 + 2 + 225 = 666.

It is not a de Polignac number, because 403992225 - 2² = 403992221 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 403992225.

It is not an unprimeable number, because it can be changed into a prime (403992221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58137 + ... + 64713.

Almost surely, 2^403992225 is an apocalyptic number.

403992225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

403992225 is an abundant number, since it is smaller than the sum of its proper divisors (509560415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403992225 is a wasteful number, since it uses less digits than its factorization.

403992225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616 (or 6605 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 403992225 is about 20099.5578309574. The cubic root of 403992225 is about 739.2494368132.

It can be divided in two parts, 40399 and 2225, that added together give a palindrome (42624).

The spelling of 403992225 in words is "four hundred three million, nine hundred ninety-two thousand, two hundred twenty-five".