133225401 has 16 divisors (see below), whose sum is σ = 181960704. Its totient is φ = 86665104.

The previous prime is 133225399. The next prime is 133225409. The reversal of 133225401 is 104522331.

It is not a de Polignac number, because 133225401 - 2¹ = 133225399 is a prime.

It is a super-2 number, since 2×133225401² = 35498014943221602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133225409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52770 + ... + 55236.

It is an arithmetic number, because the mean of its divisors is an integer number (11372544).

Almost surely, 2^133225401 is an apocalyptic number.

It is an amenable number.

133225401 is a deficient number, since it is larger than the sum of its proper divisors (48735303).

133225401 is a wasteful number, since it uses less digits than its factorization.

133225401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 133225401 is about 11542.3308304692. The cubic root of 133225401 is about 510.7350684412.

Adding to 133225401 its reverse (104522331), we get a palindrome (237747732).

The spelling of 133225401 in words is "one hundred thirty-three million, two hundred twenty-five thousand, four hundred one".