25151887 has 2 divisors, whose sum is σ = 25151888. Its totient is φ = 25151886.

The previous prime is 25151851. The next prime is 25151927. The reversal of 25151887 is 78815152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25151887 - 2¹⁹ = 24627599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25151807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575943 + 12575944.

It is an arithmetic number, because the mean of its divisors is an integer number (12575944).

Almost surely, 2^25151887 is an apocalyptic number.

25151887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151887 is an equidigital number, since it uses as much as digits as its factorization.

25151887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 37.

The square root of 25151887 is about 5015.1657001539. The cubic root of 25151887 is about 292.9927390094.

The spelling of 25151887 in words is "twenty-five million, one hundred fifty-one thousand, eight hundred eighty-seven".