381208725 has 36 divisors (see below), whose sum is σ = 684545472. Its totient is φ = 202788000.

The previous prime is 381208699. The next prime is 381208759. The reversal of 381208725 is 527802183.

381208725 is a `hidden beast` number, since 381 + 208 + 72 + 5 = 666.

It is not a de Polignac number, because 381208725 - 2¹¹ = 381206677 is a prime.

It is a super-2 number, since 2×381208725² = 290640184032251250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 381208725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95010 + ... + 98940.

It is an arithmetic number, because the mean of its divisors is an integer number (19015152).

Almost surely, 2^381208725 is an apocalyptic number.

It is an amenable number.

381208725 is a deficient number, since it is larger than the sum of its proper divisors (303336747).

381208725 is a wasteful number, since it uses less digits than its factorization.

381208725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378 (or 4370 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 381208725 is about 19524.5672167144. The cubic root of 381208725 is about 725.0828125777.

The spelling of 381208725 in words is "three hundred eighty-one million, two hundred eight thousand, seven hundred twenty-five".