133525250 has 16 divisors (see below), whose sum is σ = 249959736. Its totient is φ = 53410000.

The previous prime is 133525213. The next prime is 133525289. The reversal of 133525250 is 52525331.

It can be written as a sum of positive squares in 4 ways, for example, as 49014001 + 84511249 = 7001^2 + 9193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266801 + ... + 267300.

Almost surely, 2^133525250 is an apocalyptic number.

133525250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133525250 is a deficient number, since it is larger than the sum of its proper divisors (116434486).

133525250 is an equidigital number, since it uses as much as digits as its factorization.

133525250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534118 (or 534108 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 133525250 is about 11555.3126309936. The cubic root of 133525250 is about 511.1179500065.

The spelling of 133525250 in words is "one hundred thirty-three million, five hundred twenty-five thousand, two hundred fifty".