25512541 has 4 divisors (see below), whose sum is σ = 25522684. Its totient is φ = 25502400.

The previous prime is 25512523. The next prime is 25512559. The reversal of 25512541 is 14521552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (25512523) and next prime (25512559).

It can be written as a sum of positive squares in 2 ways, for example, as 8323225 + 17189316 = 2885^2 + 4146^2 .

It is a cyclic number.

It is not a de Polignac number, because 25512541 - 2⁷ = 25512413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512521) 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, 1861 + ... + 7381.

It is an arithmetic number, because the mean of its divisors is an integer number (6380671).

Almost surely, 2^25512541 is an apocalyptic number.

It is an amenable number.

25512541 is a deficient number, since it is larger than the sum of its proper divisors (10143).

25512541 is an equidigital number, since it uses as much as digits as its factorization.

25512541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10142.

The product of its digits is 2000, while the sum is 25.

The square root of 25512541 is about 5050.9940605786. The cubic root of 25512541 is about 294.3865101739.

The spelling of 25512541 in words is "twenty-five million, five hundred twelve thousand, five hundred forty-one".