25606545 has 16 divisors (see below), whose sum is σ = 41395200. Its totient is φ = 13515264.

The previous prime is 25606541. The next prime is 25606549. The reversal of 25606545 is 54560652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25606541) and next prime (25606549).

It is not a de Polignac number, because 25606545 - 2² = 25606541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25606541) 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, 7345 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (2587200).

Almost surely, 2^25606545 is an apocalyptic number.

It is an amenable number.

25606545 is a deficient number, since it is larger than the sum of its proper divisors (15788655).

25606545 is a wasteful number, since it uses less digits than its factorization.

25606545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 25606545 is about 5060.2909995375. The cubic root of 25606545 is about 294.7476344033.

The spelling of 25606545 in words is "twenty-five million, six hundred six thousand, five hundred forty-five".