25660481 has 8 divisors (see below), whose sum is σ = 31992384. Its totient is φ = 19995120.

The previous prime is 25660471. The next prime is 25660501. The reversal of 25660481 is 18406652.

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 25660481 - 2⁶ = 25660417 is a prime.

It is a super-2 number, since 2×25660481² = 1316920570302722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25660421) 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, 166550 + ... + 166703.

It is an arithmetic number, because the mean of its divisors is an integer number (3999048).

Almost surely, 2^25660481 is an apocalyptic number.

It is an amenable number.

25660481 is a deficient number, since it is larger than the sum of its proper divisors (6331903).

25660481 is a wasteful number, since it uses less digits than its factorization.

25660481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333271.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25660481 is about 5065.6175339242. The cubic root of 25660481 is about 294.9544351726.

The spelling of 25660481 in words is "twenty-five million, six hundred sixty thousand, four hundred eighty-one".