25625906 has 8 divisors (see below), whose sum is σ = 38514204. Its totient is φ = 12787840.

The previous prime is 25625903. The next prime is 25625921. The reversal of 25625906 is 60952652.

It can be written as a sum of positive squares in 2 ways, for example, as 22705225 + 2920681 = 4765^2 + 1709^2 .

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 11255 + ... + 13338.

Almost surely, 2^25625906 is an apocalyptic number.

25625906 is a deficient number, since it is larger than the sum of its proper divisors (12888298).

25625906 is a wasteful number, since it uses less digits than its factorization.

25625906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25116.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 25625906 is about 5062.2036703396. The cubic root of 25625906 is about 294.8219015006.

It can be divided in two parts, 256 and 25906, that added together give a palindrome (26162).

The spelling of 25625906 in words is "twenty-five million, six hundred twenty-five thousand, nine hundred six".