1025863764 has 12 divisors (see below), whose sum is σ = 2393682144. Its totient is φ = 341954584.

The previous prime is 1025863753. The next prime is 1025863781. The reversal of 1025863764 is 4673685201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42744312 + ... + 42744335.

It is an arithmetic number, because the mean of its divisors is an integer number (199473512).

Almost surely, 2^1025863764 is an apocalyptic number.

It is an amenable number.

1025863764 is an abundant number, since it is smaller than the sum of its proper divisors (1367818380).

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

1025863764 is a wasteful number, since it uses less digits than its factorization.

1025863764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85488654 (or 85488652 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 1025863764 is about 32029.1080737507. The cubic root of 1025863764 is about 1008.5479785352.

The spelling of 1025863764 in words is "one billion, twenty-five million, eight hundred sixty-three thousand, seven hundred sixty-four".