25880121 has 8 divisors (see below), whose sum is σ = 38340960. Its totient is φ = 17253396.

The previous prime is 25880117. The next prime is 25880123. The reversal of 25880121 is 12108852.

It is not a de Polignac number, because 25880121 - 2² = 25880117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 958523 = 25880121 / (2 + 5 + 8 + 8 + 0 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (25880123) 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 7 ways as a sum of consecutive naturals, for example, 479235 + ... + 479288.

It is an arithmetic number, because the mean of its divisors is an integer number (4792620).

Almost surely, 2^25880121 is an apocalyptic number.

It is an amenable number.

25880121 is a deficient number, since it is larger than the sum of its proper divisors (12460839).

25880121 is an equidigital number, since it uses as much as digits as its factorization.

25880121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958532 (or 958526 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 25880121 is about 5087.2508292790. The cubic root of 25880121 is about 295.7935962144.

Adding to 25880121 its reverse (12108852), we get a palindrome (37988973).

The spelling of 25880121 in words is "twenty-five million, eight hundred eighty thousand, one hundred twenty-one".