381256250 has 24 divisors (see below), whose sum is σ = 714821436. Its totient is φ = 152500000.

The previous prime is 381256247. The next prime is 381256307. The reversal of 381256250 is 52652183.

It can be written as a sum of positive squares in 6 ways, for example, as 28079401 + 353176849 = 5299^2 + 18793^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24251 + ... + 36750.

Almost surely, 2^381256250 is an apocalyptic number.

381256250 is a deficient number, since it is larger than the sum of its proper divisors (333565186).

381256250 is an frugal number, since it uses more digits than its factorization.

381256250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61028 (or 61008 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 381256250 is about 19525.7842352106. The cubic root of 381256250 is about 725.1129431654.

The spelling of 381256250 in words is "three hundred eighty-one million, two hundred fifty-six thousand, two hundred fifty".