38198748025 has 9 divisors (see below), whose sum is σ = 47367659341. Its totient is φ = 30558216640.

The previous prime is 38198748023. The next prime is 38198748053. The reversal of 38198748025 is 52084789183.

The square root of 38198748025 is 195445.

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

38198748025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3883408489 + 34315339536 = 62317^2 + 185244^2 .

It is not a de Polignac number, because 38198748025 - 2¹ = 38198748023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38198748023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 957681 + ... + 996769.

Almost surely, 2^38198748025 is an apocalyptic number.

38198748025 is the 195445-th square number.

38198748025 is the 97723-rd centered octagonal number.

It is an amenable number.

38198748025 is a deficient number, since it is larger than the sum of its proper divisors (9168911316).

38198748025 is an frugal number, since it uses more digits than its factorization.

38198748025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78188 (or 39094 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 38198748025 in words is "thirty-eight billion, one hundred ninety-eight million, seven hundred forty-eight thousand, twenty-five".