1025251387 has 2 divisors, whose sum is σ = 1025251388. Its totient is φ = 1025251386.

The previous prime is 1025251379. The next prime is 1025251397. The reversal of 1025251387 is 7831525201.

1025251387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1025251387 - 2³ = 1025251379 is a prime.

It is a super-2 number, since 2×1025251387² = 2102280813090847538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1025251397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512625693 + 512625694.

It is an arithmetic number, because the mean of its divisors is an integer number (512625694).

Almost surely, 2^1025251387 is an apocalyptic number.

1025251387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025251387 is an equidigital number, since it uses as much as digits as its factorization.

1025251387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1025251387 is about 32019.5469518230. The cubic root of 1025251387 is about 1008.3472584072.

Adding to 1025251387 its reverse (7831525201), we get a palindrome (8856776588).

The spelling of 1025251387 in words is "one billion, twenty-five million, two hundred fifty-one thousand, three hundred eighty-seven".