25620478 has 8 divisors (see below), whose sum is σ = 41386968. Its totient is φ = 11824824.

The previous prime is 25620473. The next prime is 25620481. The reversal of 25620478 is 87402652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620473) 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, 492676 + ... + 492727.

It is an arithmetic number, because the mean of its divisors is an integer number (5173371).

Almost surely, 2^25620478 is an apocalyptic number.

25620478 is a deficient number, since it is larger than the sum of its proper divisors (15766490).

25620478 is a wasteful number, since it uses less digits than its factorization.

25620478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985418.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 25620478 is about 5061.6675117989. The cubic root of 25620478 is about 294.8010839435.

The spelling of 25620478 in words is "twenty-five million, six hundred twenty thousand, four hundred seventy-eight".