25552121 has 8 divisors (see below), whose sum is σ = 29278464. Its totient is φ = 21844800.

The previous prime is 25552099. The next prime is 25552123. The reversal of 25552121 is 12125552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25552121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25552123) 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, 1745 + ... + 7358.

It is an arithmetic number, because the mean of its divisors is an integer number (3659808).

Almost surely, 2^25552121 is an apocalyptic number.

It is an amenable number.

25552121 is a deficient number, since it is larger than the sum of its proper divisors (3726343).

25552121 is an equidigital number, since it uses as much as digits as its factorization.

25552121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9511.

The product of its digits is 1000, while the sum is 23.

The square root of 25552121 is about 5054.9105827898. The cubic root of 25552121 is about 294.5386679923.

Adding to 25552121 its reverse (12125552), we get a palindrome (37677673).

The spelling of 25552121 in words is "twenty-five million, five hundred fifty-two thousand, one hundred twenty-one".