133888425 has 24 divisors (see below), whose sum is σ = 241487520. Its totient is φ = 64915200.

The previous prime is 133888423. The next prime is 133888427. The reversal of 133888425 is 524888331.

It is an interprime number because it is at equal distance from previous prime (133888423) and next prime (133888427).

It is not a de Polignac number, because 133888425 - 2¹ = 133888423 is a prime.

It is a super-2 number, since 2×133888425² = 35852220697961250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133888423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80320 + ... + 81969.

It is an arithmetic number, because the mean of its divisors is an integer number (10061980).

Almost surely, 2^133888425 is an apocalyptic number.

133888425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133888425 is a deficient number, since it is larger than the sum of its proper divisors (107599095).

133888425 is a wasteful number, since it uses less digits than its factorization.

133888425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162313 (or 162308 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 133888425 is about 11571.0165931953. The cubic root of 133888425 is about 511.5809266631.

The spelling of 133888425 in words is "one hundred thirty-three million, eight hundred eighty-eight thousand, four hundred twenty-five".