1025187863 has 16 divisors (see below), whose sum is σ = 1193418240. Its totient is φ = 862538976.

The previous prime is 1025187853. The next prime is 1025187913. The reversal of 1025187863 is 3687815201.

It is a cyclic number.

It is not a de Polignac number, because 1025187863 - 2¹² = 1025183767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1025187863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025187833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85598 + ... + 96836.

It is an arithmetic number, because the mean of its divisors is an integer number (74588640).

Almost surely, 2^1025187863 is an apocalyptic number.

1025187863 is a deficient number, since it is larger than the sum of its proper divisors (168230377).

1025187863 is a wasteful number, since it uses less digits than its factorization.

1025187863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1025187863 is about 32018.5549798863. The cubic root of 1025187863 is about 1008.3264324339.

The spelling of 1025187863 in words is "one billion, twenty-five million, one hundred eighty-seven thousand, eight hundred sixty-three".