108139034025 has 81 divisors (see below), whose sum is σ = 213004730757. Its totient is φ = 52404739200.

The previous prime is 108139033991. The next prime is 108139034027. The reversal of 108139034025 is 520430931801.

The square root of 108139034025 is 328845.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1060870041 + 107078163984 = 32571^2 + 327228^2 .

It is not a de Polignac number, because 108139034025 - 2¹³ = 108139025833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108139034027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 54258429 + ... + 54260421.

Almost surely, 2^108139034025 is an apocalyptic number.

108139034025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

108139034025 is the 328845-th square number.

108139034025 is the 164423-rd centered octagonal number.

It is an amenable number.

108139034025 is a deficient number, since it is larger than the sum of its proper divisors (104865696732).

108139034025 is an equidigital number, since it uses as much as digits as its factorization.

108139034025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Multiplying 108139034025 by its sum of digits (36), we get a square (3893005224900 = 1973070²).

Adding to 108139034025 its reverse (520430931801), we get a palindrome (628569965826).

The spelling of 108139034025 in words is "one hundred eight billion, one hundred thirty-nine million, thirty-four thousand, twenty-five".