1025761986 has 12 divisors (see below), whose sum is σ = 2222484342. Its totient is φ = 341920656.

The previous prime is 1025761973. The next prime is 1025761999. The reversal of 1025761986 is 6891675201.

1025761986 is a `hidden beast` number, since 1 + 0 + 25 + 7 + 619 + 8 + 6 = 666.

1025761986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1025761973) and next prime (1025761999).

It can be written as a sum of positive squares in only one way, i.e., 949810761 + 75951225 = 30819^2 + 8715^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28493371 + ... + 28493406.

Almost surely, 2^1025761986 is an apocalyptic number.

1025761986 is an abundant number, since it is smaller than the sum of its proper divisors (1196722356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025761986 is a wasteful number, since it uses less digits than its factorization.

1025761986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56986785 (or 56986782 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1025761986 is about 32027.5191983394. The cubic root of 1025761986 is about 1008.5146240768.

The spelling of 1025761986 in words is "one billion, twenty-five million, seven hundred sixty-one thousand, nine hundred eighty-six".