386405425 has 72 divisors (see below), whose sum is σ = 588411000. Its totient is φ = 250629120.

The previous prime is 386405423. The next prime is 386405429. The reversal of 386405425 is 524504683.

It can be written as a sum of positive squares in 12 ways, for example, as 162843121 + 223562304 = 12761^2 + 14952^2 .

It is not a de Polignac number, because 386405425 - 2¹ = 386405423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (386405423) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2593251 + ... + 2593399.

It is an arithmetic number, because the mean of its divisors is an integer number (8172375).

Almost surely, 2^386405425 is an apocalyptic number.

386405425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

386405425 is a deficient number, since it is larger than the sum of its proper divisors (202005575).

386405425 is a wasteful number, since it uses less digits than its factorization.

386405425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 386405425 is about 19657.1977911400. The cubic root of 386405425 is about 728.3627691494.

The spelling of 386405425 in words is "three hundred eighty-six million, four hundred five thousand, four hundred twenty-five".