25605061 has 4 divisors (see below), whose sum is σ = 25726624. Its totient is φ = 25483500.

The previous prime is 25605059. The next prime is 25605067. The reversal of 25605061 is 16050652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25605061 - 2¹ = 25605059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25605067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60465 + ... + 60886.

It is an arithmetic number, because the mean of its divisors is an integer number (6431656).

Almost surely, 2^25605061 is an apocalyptic number.

It is an amenable number.

25605061 is a deficient number, since it is larger than the sum of its proper divisors (121563).

25605061 is a wasteful number, since it uses less digits than its factorization.

25605061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121562.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 25605061 is about 5060.1443655295. The cubic root of 25605061 is about 294.7419403651.

The spelling of 25605061 in words is "twenty-five million, six hundred five thousand, sixty-one".