381213630625 has 15 divisors (see below), whose sum is σ = 476383841967. Its totient is φ = 304958556000.

The previous prime is 381213630619. The next prime is 381213630649. The reversal of 381213630625 is 526036312183.

The square root of 381213630625 is 617425.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 96160149409 + 285053481216 = 310097^2 + 533904^2 .

It is not a de Polignac number, because 381213630625 - 2⁵ = 381213630593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 15423277 + ... + 15447973.

Almost surely, 2^381213630625 is an apocalyptic number.

381213630625 is the 617425-th square number.

381213630625 is the 308713-rd centered octagonal number.

It is an amenable number.

381213630625 is a deficient number, since it is larger than the sum of its proper divisors (95170211342).

381213630625 is an frugal number, since it uses more digits than its factorization.

381213630625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49414 (or 24702 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 381213630625 in words is "three hundred eighty-one billion, two hundred thirteen million, six hundred thirty thousand, six hundred twenty-five".