133261525 has 12 divisors (see below), whose sum is σ = 170943300. Its totient is φ = 102932480.

The previous prime is 133261519. The next prime is 133261543. The reversal of 133261525 is 525162331.

It can be written as a sum of positive squares in 6 ways, for example, as 5503716 + 127757809 = 2346^2 + 11303^2 .

It is not a de Polignac number, because 133261525 - 2¹³ = 133253333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133261493 and 133261502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91180 + ... + 92629.

It is an arithmetic number, because the mean of its divisors is an integer number (14245275).

Almost surely, 2^133261525 is an apocalyptic number.

It is an amenable number.

133261525 is a deficient number, since it is larger than the sum of its proper divisors (37681775).

133261525 is a wasteful number, since it uses less digits than its factorization.

133261525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183848 (or 183843 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 133261525 is about 11543.8955729858. The cubic root of 133261525 is about 510.7812261212.

The spelling of 133261525 in words is "one hundred thirty-three million, two hundred sixty-one thousand, five hundred twenty-five".