25712417 has 2 divisors, whose sum is σ = 25712418. Its totient is φ = 25712416.

The previous prime is 25712399. The next prime is 25712441. The reversal of 25712417 is 71421752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 2825761 = 4784^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 25712417 - 2⁸ = 25712161 is a prime.

It is a super-2 number, since 2×25712417² = 1322256775963778, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25712417.

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, 12856208 + 12856209.

It is an arithmetic number, because the mean of its divisors is an integer number (12856209).

Almost surely, 2^25712417 is an apocalyptic number.

It is an amenable number.

25712417 is a deficient number, since it is larger than the sum of its proper divisors (1).

25712417 is an equidigital number, since it uses as much as digits as its factorization.

25712417 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 25712417 is about 5070.7412673099. The cubic root of 25712417 is about 295.1532938802.

The spelling of 25712417 in words is "twenty-five million, seven hundred twelve thousand, four hundred seventeen".