25542017 has 4 divisors (see below), whose sum is σ = 25559040. Its totient is φ = 25524996.

The previous prime is 25542001. The next prime is 25542031. The reversal of 25542017 is 71024552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25542017 - 2⁴ = 25542001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25542217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6017 + ... + 9342.

It is an arithmetic number, because the mean of its divisors is an integer number (6389760).

Almost surely, 2^25542017 is an apocalyptic number.

It is an amenable number.

25542017 is a deficient number, since it is larger than the sum of its proper divisors (17023).

25542017 is a wasteful number, since it uses less digits than its factorization.

25542017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17022.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25542017 is about 5053.9110597635. The cubic root of 25542017 is about 294.4998400211.

Adding to 25542017 its reverse (71024552), we get a palindrome (96566569).

The spelling of 25542017 in words is "twenty-five million, five hundred forty-two thousand, seventeen".