25660426 has 8 divisors (see below), whose sum is σ = 41989824. Its totient is φ = 11663820.

The previous prime is 25660423. The next prime is 25660441. The reversal of 25660426 is 62406652.

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

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 3 ways as a sum of consecutive naturals, for example, 583170 + ... + 583213.

It is an arithmetic number, because the mean of its divisors is an integer number (5248728).

Almost surely, 2^25660426 is an apocalyptic number.

25660426 is a deficient number, since it is larger than the sum of its proper divisors (16329398).

25660426 is a wasteful number, since it uses less digits than its factorization.

25660426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166396.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 25660426 is about 5065.6121051656. The cubic root of 25660426 is about 294.9542244400.

The spelling of 25660426 in words is "twenty-five million, six hundred sixty thousand, four hundred twenty-six".