381425517 has 30 divisors (see below), whose sum is σ = 626307374. Its totient is φ = 231161040.

The previous prime is 381425503. The next prime is 381425521. The reversal of 381425517 is 715524183.

It can be written as a sum of positive squares in only one way, i.e., 254051721 + 127373796 = 15939^2 + 11286^2 .

It is not a de Polignac number, because 381425517 - 2¹⁵ = 381392749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381425557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9658 + ... + 29259.

Almost surely, 2^381425517 is an apocalyptic number.

It is an amenable number.

381425517 is a deficient number, since it is larger than the sum of its proper divisors (244881857).

381425517 is a wasteful number, since it uses less digits than its factorization.

381425517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38951 (or 38931 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 381425517 is about 19530.1182024073. The cubic root of 381425517 is about 725.2202371730.

The spelling of 381425517 in words is "three hundred eighty-one million, four hundred twenty-five thousand, five hundred seventeen".