25430881 has 8 divisors (see below), whose sum is σ = 30001664. Its totient is φ = 21094560.

The previous prime is 25430863. The next prime is 25430887. The reversal of 25430881 is 18803452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25430881 - 2⁵ = 25430849 is a prime.

It is a super-2 number, since 2×25430881² = 1293459416872322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (25430887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58380 + ... + 58813.

It is an arithmetic number, because the mean of its divisors is an integer number (3750208).

Almost surely, 2^25430881 is an apocalyptic number.

It is an amenable number.

25430881 is a deficient number, since it is larger than the sum of its proper divisors (4570783).

25430881 is a wasteful number, since it uses less digits than its factorization.

25430881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117231.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 25430881 is about 5042.9040244684. The cubic root of 25430881 is about 294.0720857684.

The spelling of 25430881 in words is "twenty-five million, four hundred thirty thousand, eight hundred eighty-one".