394451425 has 24 divisors (see below), whose sum is σ = 521451000. Its totient is φ = 294958080.

The previous prime is 394451399. The next prime is 394451443. The reversal of 394451425 is 524154493.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 126540001 + 267911424 = 11249^2 + 16368^2 .

It is not a de Polignac number, because 394451425 - 2²⁵ = 360896993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60211 + ... + 66439.

It is an arithmetic number, because the mean of its divisors is an integer number (21727125).

Almost surely, 2^394451425 is an apocalyptic number.

It is an amenable number.

394451425 is a deficient number, since it is larger than the sum of its proper divisors (126999575).

394451425 is a wasteful number, since it uses less digits than its factorization.

394451425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405 (or 6400 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 394451425 is about 19860.8012174736. The cubic root of 394451425 is about 733.3835703647.

The spelling of 394451425 in words is "three hundred ninety-four million, four hundred fifty-one thousand, four hundred twenty-five".