25148161 has 4 divisors (see below), whose sum is σ = 25959424. Its totient is φ = 24336900.

The previous prime is 25148147. The next prime is 25148173. The reversal of 25148161 is 16184152.

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 25148161 - 2⁹ = 25147649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25148141) 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, 405585 + ... + 405646.

It is an arithmetic number, because the mean of its divisors is an integer number (6489856).

Almost surely, 2^25148161 is an apocalyptic number.

It is an amenable number.

25148161 is a deficient number, since it is larger than the sum of its proper divisors (811263).

25148161 is an equidigital number, since it uses as much as digits as its factorization.

25148161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811262.

The product of its digits is 1920, while the sum is 28.

The square root of 25148161 is about 5014.7942131258. The cubic root of 25148161 is about 292.9782703156.

The spelling of 25148161 in words is "twenty-five million, one hundred forty-eight thousand, one hundred sixty-one".