25250247 has 12 divisors (see below), whose sum is σ = 39788424. Its totient is φ = 15303120.

The previous prime is 25250237. The next prime is 25250257. The reversal of 25250247 is 74205252.

It is an interprime number because it is at equal distance from previous prime (25250237) and next prime (25250257).

It is not a de Polignac number, because 25250247 - 2⁴ = 25250231 is a prime.

It is a super-2 number, since 2×25250247² = 1275149947122018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25250247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25250237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127428 + ... + 127625.

It is an arithmetic number, because the mean of its divisors is an integer number (3315702).

Almost surely, 2^25250247 is an apocalyptic number.

25250247 is a deficient number, since it is larger than the sum of its proper divisors (14538177).

25250247 is a wasteful number, since it uses less digits than its factorization.

25250247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255070 (or 255067 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 25250247 is about 5024.9623879189. The cubic root of 25250247 is about 293.3741720287.

Adding to 25250247 its reverse (74205252), we get a palindrome (99455499).

The spelling of 25250247 in words is "twenty-five million, two hundred fifty thousand, two hundred forty-seven".