131225533 has 8 divisors (see below), whose sum is σ = 146257920. Its totient is φ = 117005760.

The previous prime is 131225531. The next prime is 131225539. The reversal of 131225533 is 335522131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131225533 - 2¹ = 131225531 is a prime.

It is a super-2 number, since 2×131225533² = 34440281022268178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131225498 and 131225507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131225531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202813 + ... + 203458.

It is an arithmetic number, because the mean of its divisors is an integer number (18282240).

Almost surely, 2^131225533 is an apocalyptic number.

It is an amenable number.

131225533 is a deficient number, since it is larger than the sum of its proper divisors (15032387).

131225533 is a wasteful number, since it uses less digits than its factorization.

131225533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406307.

The product of its digits is 2700, while the sum is 25.

The square root of 131225533 is about 11455.3713601961. The cubic root of 131225533 is about 508.1665978168.

Adding to 131225533 its reverse (335522131), we get a palindrome (466747664).

The spelling of 131225533 in words is "one hundred thirty-one million, two hundred twenty-five thousand, five hundred thirty-three".