25514987 has 2 divisors, whose sum is σ = 25514988. Its totient is φ = 25514986.

The previous prime is 25514969. The next prime is 25514989. The reversal of 25514987 is 78941552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25514987 - 2¹⁰ = 25513963 is a prime.

It is a super-2 number, since 2×25514987² = 1302029123220338, which contains 22 as substring.

Together with 25514989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25514989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12757493 + 12757494.

It is an arithmetic number, because the mean of its divisors is an integer number (12757494).

Almost surely, 2^25514987 is an apocalyptic number.

25514987 is a deficient number, since it is larger than the sum of its proper divisors (1).

25514987 is an equidigital number, since it uses as much as digits as its factorization.

25514987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 25514987 is about 5051.2361853313. The cubic root of 25514987 is about 294.3959179183.

The spelling of 25514987 in words is "twenty-five million, five hundred fourteen thousand, nine hundred eighty-seven".