25712147 has 2 divisors, whose sum is σ = 25712148. Its totient is φ = 25712146.

The previous prime is 25712131. The next prime is 25712161. The reversal of 25712147 is 74121752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25712147 - 2⁴ = 25712131 is a prime.

It is a super-2 number, since 2×25712147² = 1322229006699218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25712117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12856073 + 12856074.

It is an arithmetic number, because the mean of its divisors is an integer number (12856074).

Almost surely, 2^25712147 is an apocalyptic number.

25712147 is a deficient number, since it is larger than the sum of its proper divisors (1).

25712147 is an equidigital number, since it uses as much as digits as its factorization.

25712147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 29.

The square root of 25712147 is about 5070.7146439136. The cubic root of 25712147 is about 295.1522607650.

Adding to 25712147 its reverse (74121752), we get a palindrome (99833899).

The spelling of 25712147 in words is "twenty-five million, seven hundred twelve thousand, one hundred forty-seven".