133100025 has 12 divisors (see below), whose sum is σ = 220058832. Its totient is φ = 70986640.

The previous prime is 133100017. The next prime is 133100039. The reversal of 133100025 is 520001331.

133100025 = 1607² + 1608² + ... + 1656².

It is a happy number.

It is not a de Polignac number, because 133100025 - 2³ = 133100017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 133099977 and 133100013.

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, 887259 + ... + 887408.

It is an arithmetic number, because the mean of its divisors is an integer number (18338236).

Almost surely, 2^133100025 is an apocalyptic number.

133100025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133100025 is a deficient number, since it is larger than the sum of its proper divisors (86958807).

133100025 is a wasteful number, since it uses less digits than its factorization.

133100025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774680 (or 1774675 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 133100025 is about 11536.8984133518. The cubic root of 133100025 is about 510.5748036643.

Adding to 133100025 its reverse (520001331), we get a palindrome (653101356).

The spelling of 133100025 in words is "one hundred thirty-three million, one hundred thousand, twenty-five".