138525125 has 8 divisors (see below), whose sum is σ = 172879512. Its totient is φ = 110820000.

The previous prime is 138525119. The next prime is 138525131. The reversal of 138525125 is 521525831.

It is an interprime number because it is at equal distance from previous prime (138525119) and next prime (138525131).

It can be written as a sum of positive squares in 4 ways, for example, as 2079364 + 136445761 = 1442^2 + 11681^2 .

It is not a de Polignac number, because 138525125 - 2¹⁶ = 138459589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138525091 and 138525100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553976 + ... + 554225.

It is an arithmetic number, because the mean of its divisors is an integer number (21609939).

Almost surely, 2^138525125 is an apocalyptic number.

It is an amenable number.

138525125 is a deficient number, since it is larger than the sum of its proper divisors (34354387).

138525125 is an equidigital number, since it uses as much as digits as its factorization.

138525125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108216 (or 1108206 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 138525125 is about 11769.6697064956. The cubic root of 138525125 is about 517.4195694428.

The spelling of 138525125 in words is "one hundred thirty-eight million, five hundred twenty-five thousand, one hundred twenty-five".