406992725 has 6 divisors (see below), whose sum is σ = 504671010. Its totient is φ = 325594160.

The previous prime is 406992713. The next prime is 406992779. The reversal of 406992725 is 527299604.

It can be written as a sum of positive squares in 3 ways, for example, as 127735204 + 279257521 = 11302^2 + 16711^2 .

It is not a de Polignac number, because 406992725 - 2¹² = 406988629 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 8139830 + ... + 8139879.

It is an arithmetic number, because the mean of its divisors is an integer number (84111835).

Almost surely, 2^406992725 is an apocalyptic number.

It is an amenable number.

406992725 is a deficient number, since it is larger than the sum of its proper divisors (97678285).

406992725 is a wasteful number, since it uses less digits than its factorization.

406992725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16279719 (or 16279714 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 406992725 is about 20174.0606968453. The cubic root of 406992725 is about 741.0750899929.

The spelling of 406992725 in words is "four hundred six million, nine hundred ninety-two thousand, seven hundred twenty-five".