25690127 has 4 divisors (see below), whose sum is σ = 25712520. Its totient is φ = 25667736.

The previous prime is 25690123. The next prime is 25690129. The reversal of 25690127 is 72109652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25690127 - 2² = 25690123 is a prime.

It is a super-2 number, since 2×25690127² = 1319965250552258, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25690093 and 25690102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25690121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9377 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (6428130).

Almost surely, 2^25690127 is an apocalyptic number.

25690127 is a deficient number, since it is larger than the sum of its proper divisors (22393).

25690127 is a wasteful number, since it uses less digits than its factorization.

25690127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22392.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 25690127 is about 5068.5428872606. The cubic root of 25690127 is about 295.0679801200.

Adding to 25690127 its reverse (72109652), we get a palindrome (97799779).

The spelling of 25690127 in words is "twenty-five million, six hundred ninety thousand, one hundred twenty-seven".