133988125 has 10 divisors (see below), whose sum is σ = 167432342. Its totient is φ = 107190000.

The previous prime is 133988111. The next prime is 133988131. The reversal of 133988125 is 521889331.

It can be written as a sum of positive squares in 5 ways, for example, as 33246756 + 100741369 = 5766^2 + 10037^2 .

It is not a de Polignac number, because 133988125 - 2¹¹ = 133986077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 106566 + ... + 107815.

Almost surely, 2^133988125 is an apocalyptic number.

It is an amenable number.

133988125 is a deficient number, since it is larger than the sum of its proper divisors (33444217).

133988125 is an frugal number, since it uses more digits than its factorization.

133988125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214401 (or 214386 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 133988125 is about 11575.3239695483. The cubic root of 133988125 is about 511.7078780492.

The spelling of 133988125 in words is "one hundred thirty-three million, nine hundred eighty-eight thousand, one hundred twenty-five".