25417481 has 2 divisors, whose sum is σ = 25417482. Its totient is φ = 25417480.

The previous prime is 25417477. The next prime is 25417487. The reversal of 25417481 is 18471452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 12313081 = 3620^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 25417481 - 2² = 25417477 is a prime.

It is a super-2 number, since 2×25417481² = 1292096680770722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25417487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12708740 + 12708741.

It is an arithmetic number, because the mean of its divisors is an integer number (12708741).

Almost surely, 2^25417481 is an apocalyptic number.

It is an amenable number.

25417481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25417481 is an equidigital number, since it uses as much as digits as its factorization.

25417481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 32.

The square root of 25417481 is about 5041.5752498599. The cubic root of 25417481 is about 294.0204260262.

The spelling of 25417481 in words is "twenty-five million, four hundred seventeen thousand, four hundred eighty-one".