25625905 has 8 divisors (see below), whose sum is σ = 30830184. Its totient is φ = 20448000.

The previous prime is 25625903. The next prime is 25625921. The reversal of 25625905 is 50952652.

It can be written as a sum of positive squares in 4 ways, for example, as 12895281 + 12730624 = 3591^2 + 3568^2 .

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

It is not a de Polignac number, because 25625905 - 2¹ = 25625903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25625903) 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, 4386 + ... + 8395.

It is an arithmetic number, because the mean of its divisors is an integer number (3853773).

Almost surely, 2^25625905 is an apocalyptic number.

It is an amenable number.

25625905 is a deficient number, since it is larger than the sum of its proper divisors (5204279).

25625905 is a wasteful number, since it uses less digits than its factorization.

25625905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 25625905 is about 5062.2035715684. The cubic root of 25625905 is about 294.8218976656.

The spelling of 25625905 in words is "twenty-five million, six hundred twenty-five thousand, nine hundred five".