25494851 has 4 divisors (see below), whose sum is σ = 25781400. Its totient is φ = 25208304.

The previous prime is 25494841. The next prime is 25494853. The reversal of 25494851 is 15849452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25494851 - 2¹⁰ = 25493827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25494853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143141 + ... + 143318.

It is an arithmetic number, because the mean of its divisors is an integer number (6445350).

Almost surely, 2^25494851 is an apocalyptic number.

25494851 is a deficient number, since it is larger than the sum of its proper divisors (286549).

25494851 is an equidigital number, since it uses as much as digits as its factorization.

25494851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286548.

The product of its digits is 57600, while the sum is 38.

The square root of 25494851 is about 5049.2426164723. The cubic root of 25494851 is about 294.3184534291.

The spelling of 25494851 in words is "twenty-five million, four hundred ninety-four thousand, eight hundred fifty-one".