25862521 has 4 divisors (see below), whose sum is σ = 25954192. Its totient is φ = 25770852.

The previous prime is 25862503. The next prime is 25862527. The reversal of 25862521 is 12526852.

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 25862521 - 2⁵ = 25862489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25862527) 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, 45411 + ... + 45976.

It is an arithmetic number, because the mean of its divisors is an integer number (6488548).

Almost surely, 2^25862521 is an apocalyptic number.

It is an amenable number.

25862521 is a deficient number, since it is larger than the sum of its proper divisors (91671).

25862521 is an equidigital number, since it uses as much as digits as its factorization.

25862521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91670.

The product of its digits is 9600, while the sum is 31.

The square root of 25862521 is about 5085.5207206342. The cubic root of 25862521 is about 295.7265286781.

The spelling of 25862521 in words is "twenty-five million, eight hundred sixty-two thousand, five hundred twenty-one".