402685925 has 6 divisors (see below), whose sum is σ = 499330578. Its totient is φ = 322148720.

The previous prime is 402685903. The next prime is 402685937. The reversal of 402685925 is 529586204.

It can be written as a sum of positive squares in 3 ways, for example, as 16248961 + 386436964 = 4031^2 + 19658^2 .

It is not a de Polignac number, because 402685925 - 2⁶ = 402685861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8053694 + ... + 8053743.

It is an arithmetic number, because the mean of its divisors is an integer number (83221763).

Almost surely, 2^402685925 is an apocalyptic number.

It is an amenable number.

402685925 is a deficient number, since it is larger than the sum of its proper divisors (96644653).

402685925 is a wasteful number, since it uses less digits than its factorization.

402685925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16107447 (or 16107442 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 402685925 is about 20067.0357801046. The cubic root of 402685925 is about 738.4517941937.

The spelling of 402685925 in words is "four hundred two million, six hundred eighty-five thousand, nine hundred twenty-five".