25014521 has 4 divisors (see below), whose sum is σ = 28588032. Its totient is φ = 21441012.

The previous prime is 25014511. The next prime is 25014523. The reversal of 25014521 is 12541052.

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 25014521 - 2¹⁴ = 24998137 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25014493 and 25014502.

It is not an unprimeable number, because it can be changed into a prime (25014523) 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, 1786745 + ... + 1786758.

It is an arithmetic number, because the mean of its divisors is an integer number (7147008).

Almost surely, 2^25014521 is an apocalyptic number.

It is an amenable number.

25014521 is a deficient number, since it is larger than the sum of its proper divisors (3573511).

25014521 is an equidigital number, since it uses as much as digits as its factorization.

25014521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3573510.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25014521 is about 5001.4518892018. The cubic root of 25014521 is about 292.4583757459.

Adding to 25014521 its reverse (12541052), we get a palindrome (37555573).

The spelling of 25014521 in words is "twenty-five million, fourteen thousand, five hundred twenty-one".