1025251187 has 2 divisors, whose sum is σ = 1025251188. Its totient is φ = 1025251186.

The previous prime is 1025251069. The next prime is 1025251247. The reversal of 1025251187 is 7811525201.

It is a strong prime.

It is an emirp because it is prime and its reverse (7811525201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025251187 is a prime.

It is a super-2 number, since 2×1025251187² = 2102279992889817938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1025251387) 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, 512625593 + 512625594.

It is an arithmetic number, because the mean of its divisors is an integer number (512625594).

Almost surely, 2^1025251187 is an apocalyptic number.

1025251187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025251187 is an equidigital number, since it uses as much as digits as its factorization.

1025251187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 1025251187 is about 32019.5438287306. The cubic root of 1025251187 is about 1008.3471928397.

Adding to 1025251187 its reverse (7811525201), we get a palindrome (8836776388).

The spelling of 1025251187 in words is "one billion, twenty-five million, two hundred fifty-one thousand, one hundred eighty-seven".