25217601 has 12 divisors (see below), whose sum is σ = 34747056. Its totient is φ = 16267560.

The previous prime is 25217561. The next prime is 25217623. The reversal of 25217601 is 10671252.

It is not a de Polignac number, because 25217601 - 2⁶ = 25217537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25217201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1491 + ... + 7256.

It is an arithmetic number, because the mean of its divisors is an integer number (2895588).

Almost surely, 2^25217601 is an apocalyptic number.

It is an amenable number.

25217601 is a deficient number, since it is larger than the sum of its proper divisors (9529455).

25217601 is an equidigital number, since it uses as much as digits as its factorization.

25217601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8812 (or 8781 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 25217601 is about 5021.7129547596. The cubic root of 25217601 is about 293.2476831834.

Adding to 25217601 its reverse (10671252), we get a palindrome (35888853).

The spelling of 25217601 in words is "twenty-five million, two hundred seventeen thousand, six hundred one".