1025255887 has 4 divisors (see below), whose sum is σ = 1033328896. Its totient is φ = 1017182880.

The previous prime is 1025255867. The next prime is 1025255899. The reversal of 1025255887 is 7885525201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025255887 - 2¹⁵ = 1025223119 is a prime.

It is a super-2 number, since 2×1025255887² = 2102299267656313538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025255807) 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 in 3 ways as a sum of consecutive naturals, for example, 4036314 + ... + 4036567.

It is an arithmetic number, because the mean of its divisors is an integer number (258332224).

Almost surely, 2^1025255887 is an apocalyptic number.

1025255887 is a deficient number, since it is larger than the sum of its proper divisors (8073009).

1025255887 is an equidigital number, since it uses as much as digits as its factorization.

1025255887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073008.

The product of its (nonzero) digits is 224000, while the sum is 43.

The square root of 1025255887 is about 32019.6172213223. The cubic root of 1025255887 is about 1008.3487336734.

The spelling of 1025255887 in words is "one billion, twenty-five million, two hundred fifty-five thousand, eight hundred eighty-seven".