25561153 has 4 divisors (see below), whose sum is σ = 25572528. Its totient is φ = 25549780.

The previous prime is 25561147. The next prime is 25561189. The reversal of 25561153 is 35116552.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25561153 - 2⁹ = 25560641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25561253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063 + ... + 7228.

It is an arithmetic number, because the mean of its divisors is an integer number (6393132).

Almost surely, 2^25561153 is an apocalyptic number.

It is an amenable number.

25561153 is a deficient number, since it is larger than the sum of its proper divisors (11375).

25561153 is an equidigital number, since it uses as much as digits as its factorization.

25561153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374.

The product of its digits is 4500, while the sum is 28.

The square root of 25561153 is about 5055.8038925575. The cubic root of 25561153 is about 294.5733677845.

The spelling of 25561153 in words is "twenty-five million, five hundred sixty-one thousand, one hundred fifty-three".