25514561 has 8 divisors (see below), whose sum is σ = 26129280. Its totient is φ = 24902928.

The previous prime is 25514557. The next prime is 25514579. The reversal of 25514561 is 16541552.

It is a happy number.

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 25514561 - 2² = 25514557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25514591) 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, 28655 + ... + 29531.

It is an arithmetic number, because the mean of its divisors is an integer number (3266160).

Almost surely, 2^25514561 is an apocalyptic number.

It is an amenable number.

25514561 is a deficient number, since it is larger than the sum of its proper divisors (614719).

25514561 is an equidigital number, since it uses as much as digits as its factorization.

25514561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its digits is 6000, while the sum is 29.

The square root of 25514561 is about 5051.1940172597. The cubic root of 25514561 is about 294.3942794909.

The spelling of 25514561 in words is "twenty-five million, five hundred fourteen thousand, five hundred sixty-one".