25567901 has 16 divisors (see below), whose sum is σ = 28170240. Its totient is φ = 23114160.

The previous prime is 25567897. The next prime is 25567903. The reversal of 25567901 is 10976552.

It is a cyclic number.

It is not a de Polignac number, because 25567901 - 2² = 25567897 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25567903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48626 + ... + 49148.

It is an arithmetic number, because the mean of its divisors is an integer number (1760640).

Almost surely, 2^25567901 is an apocalyptic number.

It is an amenable number.

25567901 is a deficient number, since it is larger than the sum of its proper divisors (2602339).

25567901 is a wasteful number, since it uses less digits than its factorization.

25567901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 25567901 is about 5056.4712003531. The cubic root of 25567901 is about 294.5992874054.

The spelling of 25567901 in words is "twenty-five million, five hundred sixty-seven thousand, nine hundred one".