25247133 has 20 divisors (see below), whose sum is σ = 38432988. Its totient is φ = 16511040.

The previous prime is 25247129. The next prime is 25247137. The reversal of 25247133 is 33174252.

25247133 is a `hidden beast` number, since 2 + 524 + 7 + 133 = 666.

It is an interprime number because it is at equal distance from previous prime (25247129) and next prime (25247137).

It can be written as a sum of positive squares in 2 ways, for example, as 19686969 + 5560164 = 4437^2 + 2358^2 .

It is not a de Polignac number, because 25247133 - 2² = 25247129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25247097 and 25247106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25247137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1353 + ... + 7233.

Almost surely, 2^25247133 is an apocalyptic number.

It is an amenable number.

25247133 is a deficient number, since it is larger than the sum of its proper divisors (13185855).

25247133 is an equidigital number, since it uses as much as digits as its factorization.

25247133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946 (or 5937 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 25247133 is about 5024.6525252996. The cubic root of 25247133 is about 293.3621113582.

The spelling of 25247133 in words is "twenty-five million, two hundred forty-seven thousand, one hundred thirty-three".