25358551 has 2 divisors, whose sum is σ = 25358552. Its totient is φ = 25358550.

The previous prime is 25358549. The next prime is 25358561. The reversal of 25358551 is 15585352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25358551 - 2¹ = 25358549 is a prime.

It is a super-2 number, since 2×25358551² = 1286112217639202, which contains 22 as substring.

Together with 25358549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25358561) 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, 12679275 + 12679276.

It is an arithmetic number, because the mean of its divisors is an integer number (12679276).

Almost surely, 2^25358551 is an apocalyptic number.

25358551 is a deficient number, since it is larger than the sum of its proper divisors (1).

25358551 is an equidigital number, since it uses as much as digits as its factorization.

25358551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30000, while the sum is 34.

The square root of 25358551 is about 5035.7274548967. The cubic root of 25358551 is about 293.7930230632.

The spelling of 25358551 in words is "twenty-five million, three hundred fifty-eight thousand, five hundred fifty-one".