25036521 has 8 divisors (see below), whose sum is σ = 33411360. Its totient is φ = 16676352.

The previous prime is 25036513. The next prime is 25036523. The reversal of 25036521 is 12563052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25036521 - 2³ = 25036513 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 25036491 and 25036500.

It is not an unprimeable number, because it can be changed into a prime (25036523) 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, 1266 + ... + 7188.

It is an arithmetic number, because the mean of its divisors is an integer number (4176420).

Almost surely, 2^25036521 is an apocalyptic number.

It is an amenable number.

25036521 is a deficient number, since it is larger than the sum of its proper divisors (8374839).

25036521 is a wasteful number, since it uses less digits than its factorization.

25036521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 25036521 is about 5003.6507671899. The cubic root of 25036521 is about 292.5440886131.

Adding to 25036521 its reverse (12563052), we get a palindrome (37599573).

The spelling of 25036521 in words is "twenty-five million, thirty-six thousand, five hundred twenty-one".