1025808879 has 48 divisors (see below), whose sum is σ = 1516986240. Its totient is φ = 614692800.

The previous prime is 1025808871. The next prime is 1025808899. The reversal of 1025808879 is 9788085201.

It is not a de Polignac number, because 1025808879 - 2³ = 1025808871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025808871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3341244 + ... + 3341550.

It is an arithmetic number, because the mean of its divisors is an integer number (31603880).

Almost surely, 2^1025808879 is an apocalyptic number.

1025808879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1025808879 is a deficient number, since it is larger than the sum of its proper divisors (491177361).

1025808879 is a wasteful number, since it uses less digits than its factorization.

1025808879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 1025808879 is about 32028.2512635329. The cubic root of 1025808879 is about 1008.5299920199.

The spelling of 1025808879 in words is "one billion, twenty-five million, eight hundred eight thousand, eight hundred seventy-nine".