133425601 has 3 divisors (see below), whose sum is σ = 133437153. Its totient is φ = 133414050.

The previous prime is 133425587. The next prime is 133425613. The reversal of 133425601 is 106524331.

The square root of 133425601 is 11551.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 106524331 = 479 ⋅222389.

It is not a de Polignac number, because 133425601 - 2⁵ = 133425569 is a prime.

It is a super-2 number, since 2×133425601² = 35604782004422402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133425661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5776 + ... + 17326.

It is an arithmetic number, because the mean of its divisors is an integer number (44479051).

Almost surely, 2^133425601 is an apocalyptic number.

133425601 is the 11551-st square number.

133425601 is the 5776-th centered octagonal number.

It is an amenable number.

133425601 is a deficient number, since it is larger than the sum of its proper divisors (11552).

133425601 is an frugal number, since it uses more digits than its factorization.

133425601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23102 (or 11551 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The cubic root of 133425601 is about 510.9907703956.

Multiplying 133425601 by its sum of digits (25), we get a square (3335640025 = 57755²).

Adding to 133425601 its reverse (106524331), we get a palindrome (239949932).

The spelling of 133425601 in words is "one hundred thirty-three million, four hundred twenty-five thousand, six hundred one".