38136231225 has 81 divisors (see below), whose sum is σ = 70043333997. Its totient is φ = 19834706880.

The previous prime is 38136231191. The next prime is 38136231241. The reversal of 38136231225 is 52213263183.

The square root of 38136231225 is 195285.

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

38136231225 is a `hidden beast` number, since 3 + 8 + 1 + 3 + 623 + 1 + 2 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8739071289 + 29397159936 = 93483^2 + 171456^2 .

It is not a de Polignac number, because 38136231225 - 2²⁹ = 37599360313 is a prime.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 38136231225.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 137675787 + ... + 137676063.

Almost surely, 2^38136231225 is an apocalyptic number.

38136231225 is the 195285-th square number.

38136231225 is the 97643-rd centered octagonal number.

It is an amenable number.

38136231225 is a deficient number, since it is larger than the sum of its proper divisors (31907102772).

38136231225 is an equidigital number, since it uses as much as digits as its factorization.

38136231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Multiplying 38136231225 by its sum of digits (36), we get a square (1372904324100 = 1171710²).

It can be divided in two parts, 38136 and 231225, that added together give a square (269361 = 519²).

The spelling of 38136231225 in words is "thirty-eight billion, one hundred thirty-six million, two hundred thirty-one thousand, two hundred twenty-five".