381945425 has 6 divisors (see below), whose sum is σ = 473612358. Its totient is φ = 305556320.

The previous prime is 381945397. The next prime is 381945469. The reversal of 381945425 is 524549183.

It can be written as a sum of positive squares in 3 ways, for example, as 2202256 + 379743169 = 1484^2 + 19487^2 .

It is not a de Polignac number, because 381945425 - 2¹⁰ = 381944401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7638884 + ... + 7638933.

It is an arithmetic number, because the mean of its divisors is an integer number (78935393).

Almost surely, 2^381945425 is an apocalyptic number.

It is an amenable number.

381945425 is a deficient number, since it is larger than the sum of its proper divisors (91666933).

381945425 is a wasteful number, since it uses less digits than its factorization.

381945425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15277827 (or 15277822 counting only the distinct ones).

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

The square root of 381945425 is about 19543.4240858658. The cubic root of 381945425 is about 725.5495951580.

The spelling of 381945425 in words is "three hundred eighty-one million, nine hundred forty-five thousand, four hundred twenty-five".