25626161 has 16 divisors (see below), whose sum is σ = 28706496. Its totient is φ = 22680000.

The previous prime is 25626149. The next prime is 25626197. The reversal of 25626161 is 16162652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25626161 is a prime.

It is a Duffinian number.

25626161 is a modest number, since divided by 6161 gives 2562 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25626131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121346 + ... + 121556.

It is an arithmetic number, because the mean of its divisors is an integer number (1794156).

Almost surely, 2^25626161 is an apocalyptic number.

It is an amenable number.

25626161 is a deficient number, since it is larger than the sum of its proper divisors (3080335).

25626161 is a wasteful number, since it uses less digits than its factorization.

25626161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464.

The product of its digits is 4320, while the sum is 29.

The square root of 25626161 is about 5062.2288569364. The cubic root of 25626161 is about 294.8228794086.

The spelling of 25626161 in words is "twenty-five million, six hundred twenty-six thousand, one hundred sixty-one".