25606641 has 16 divisors (see below), whose sum is σ = 36747648. Its totient is φ = 15801600.

The previous prime is 25606639. The next prime is 25606667. The reversal of 25606641 is 14660652.

It is not a de Polignac number, because 25606641 - 2¹ = 25606639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25606599 and 25606608.

It is not an unprimeable number, because it can be changed into a prime (25606601) 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, 1005 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (2296728).

Almost surely, 2^25606641 is an apocalyptic number.

It is an amenable number.

25606641 is a deficient number, since it is larger than the sum of its proper divisors (11141007).

25606641 is a wasteful number, since it uses less digits than its factorization.

25606641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 25606641 is about 5060.3004851491. The cubic root of 25606641 is about 294.7480027432.

The spelling of 25606641 in words is "twenty-five million, six hundred six thousand, six hundred forty-one".