25628217 has 8 divisors (see below), whose sum is σ = 34194624. Its totient is φ = 17073648.

The previous prime is 25628201. The next prime is 25628221. The reversal of 25628217 is 71282652.

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

It is not a de Polignac number, because 25628217 - 2⁴ = 25628201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25628717) 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, 5803 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (4274328).

Almost surely, 2^25628217 is an apocalyptic number.

It is an amenable number.

25628217 is a deficient number, since it is larger than the sum of its proper divisors (8566407).

25628217 is a wasteful number, since it uses less digits than its factorization.

25628217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919.

The product of its digits is 13440, while the sum is 33.

The square root of 25628217 is about 5062.4319254682. The cubic root of 25628217 is about 294.8307637945.

The spelling of 25628217 in words is "twenty-five million, six hundred twenty-eight thousand, two hundred seventeen".