25541513 has 4 divisors (see below), whose sum is σ = 25974480. Its totient is φ = 25108548.

The previous prime is 25541501. The next prime is 25541519. The reversal of 25541513 is 31514552.

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 25541513 - 2⁶ = 25541449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25541519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216395 + ... + 216512.

It is an arithmetic number, because the mean of its divisors is an integer number (6493620).

Almost surely, 2^25541513 is an apocalyptic number.

It is an amenable number.

25541513 is a deficient number, since it is larger than the sum of its proper divisors (432967).

25541513 is an equidigital number, since it uses as much as digits as its factorization.

25541513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432966.

The product of its digits is 3000, while the sum is 26.

The square root of 25541513 is about 5053.8611971442. The cubic root of 25541513 is about 294.4979029659.

The spelling of 25541513 in words is "twenty-five million, five hundred forty-one thousand, five hundred thirteen".