1025816878 has 24 divisors (see below), whose sum is σ = 1646304048. Its totient is φ = 479232288.

The previous prime is 1025816867. The next prime is 1025816921. The reversal of 1025816878 is 8786185201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42975 + ... + 62437.

It is an arithmetic number, because the mean of its divisors is an integer number (68596002).

Almost surely, 2^1025816878 is an apocalyptic number.

1025816878 is a deficient number, since it is larger than the sum of its proper divisors (620487170).

1025816878 is a wasteful number, since it uses less digits than its factorization.

1025816878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19576 (or 19557 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 46.

The square root of 1025816878 is about 32028.3761374191. The cubic root of 1025816878 is about 1008.5326134343.

The spelling of 1025816878 in words is "one billion, twenty-five million, eight hundred sixteen thousand, eight hundred seventy-eight".