25521014 has 4 divisors (see below), whose sum is σ = 38281524. Its totient is φ = 12760506.

The previous prime is 25521011. The next prime is 25521043. The reversal of 25521014 is 41012552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25521011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6380252 + ... + 6380255.

It is an arithmetic number, because the mean of its divisors is an integer number (9570381).

Almost surely, 2^25521014 is an apocalyptic number.

25521014 is a deficient number, since it is larger than the sum of its proper divisors (12760510).

25521014 is a wasteful number, since it uses less digits than its factorization.

25521014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12760509.

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

The square root of 25521014 is about 5051.8327367402. The cubic root of 25521014 is about 294.4190962502.

Adding to 25521014 its reverse (41012552), we get a palindrome (66533566).

The spelling of 25521014 in words is "twenty-five million, five hundred twenty-one thousand, fourteen".