25364561 has 8 divisors (see below), whose sum is σ = 28024704. Its totient is φ = 22834240.

The previous prime is 25364543. The next prime is 25364611. The reversal of 25364561 is 16546352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25364561 - 2⁶ = 25364497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25364501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32045 + ... + 32826.

It is an arithmetic number, because the mean of its divisors is an integer number (3503088).

Almost surely, 2^25364561 is an apocalyptic number.

It is an amenable number.

25364561 is a deficient number, since it is larger than the sum of its proper divisors (2660143).

25364561 is a wasteful number, since it uses less digits than its factorization.

25364561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64911.

The product of its digits is 21600, while the sum is 32.

The square root of 25364561 is about 5036.3241555722. The cubic root of 25364561 is about 293.8162309691.

The spelling of 25364561 in words is "twenty-five million, three hundred sixty-four thousand, five hundred sixty-one".