25152251 has 4 divisors (see below), whose sum is σ = 26019600. Its totient is φ = 24284904.

The previous prime is 25152209. The next prime is 25152289. The reversal of 25152251 is 15225152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25152251 - 2⁶ = 25152187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25152551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433631 + ... + 433688.

It is an arithmetic number, because the mean of its divisors is an integer number (6504900).

Almost surely, 2^25152251 is an apocalyptic number.

25152251 is a deficient number, since it is larger than the sum of its proper divisors (867349).

25152251 is an equidigital number, since it uses as much as digits as its factorization.

25152251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867348.

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

The square root of 25152251 is about 5015.2019899502. The cubic root of 25152251 is about 292.9941524069.

The spelling of 25152251 in words is "twenty-five million, one hundred fifty-two thousand, two hundred fifty-one".