25881541 has 4 divisors (see below), whose sum is σ = 29578912. Its totient is φ = 22184172.

The previous prime is 25881533. The next prime is 25881547. The reversal of 25881541 is 14518852.

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 25881541 - 2³ = 25881533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25881497 and 25881506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25881547) 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, 1848675 + ... + 1848688.

It is an arithmetic number, because the mean of its divisors is an integer number (7394728).

Almost surely, 2^25881541 is an apocalyptic number.

It is an amenable number.

25881541 is a deficient number, since it is larger than the sum of its proper divisors (3697371).

25881541 is an equidigital number, since it uses as much as digits as its factorization.

25881541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697370.

The product of its digits is 12800, while the sum is 34.

The square root of 25881541 is about 5087.3903919397. The cubic root of 25881541 is about 295.7990060194.

The spelling of 25881541 in words is "twenty-five million, eight hundred eighty-one thousand, five hundred forty-one".