25528051 has 2 divisors, whose sum is σ = 25528052. Its totient is φ = 25528050.

The previous prime is 25528049. The next prime is 25528079. The reversal of 25528051 is 15082552.

It is an a-pointer prime, because the next prime (25528079) can be obtained adding 25528051 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25528051 - 2¹ = 25528049 is a prime.

Together with 25528049, it forms a pair of twin primes.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (25528031) 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 as a sum of consecutive naturals, namely, 12764025 + 12764026.

It is an arithmetic number, because the mean of its divisors is an integer number (12764026).

Almost surely, 2^25528051 is an apocalyptic number.

25528051 is the 3196-th centered pentagonal number.

25528051 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528051 is an equidigital number, since it uses as much as digits as its factorization.

25528051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 25528051 is about 5052.5291686442. The cubic root of 25528051 is about 294.4461541717.

The spelling of 25528051 in words is "twenty-five million, five hundred twenty-eight thousand, fifty-one".