38781434025 has 36 divisors (see below), whose sum is σ = 73547856252. Its totient is φ = 19466757120.

The previous prime is 38781433981. The next prime is 38781434119. The reversal of 38781434025 is 52043418783.

38781434025 is a `hidden beast` number, since 38 + 78 + 143 + 402 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 530288784 + 38251145241 = 23028^2 + 195579^2 .

It is not a de Polignac number, because 38781434025 - 2⁹ = 38781433513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 5065644 + ... + 5073293.

It is an arithmetic number, because the mean of its divisors is an integer number (2042996007).

Almost surely, 2^38781434025 is an apocalyptic number.

It is an amenable number.

38781434025 is a deficient number, since it is larger than the sum of its proper divisors (34766422227).

38781434025 is a wasteful number, since it uses less digits than its factorization.

38781434025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10138970 (or 10138962 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 38781434025 in words is "thirty-eight billion, seven hundred eighty-one million, four hundred thirty-four thousand, twenty-five".