868819425 has 24 divisors (see below), whose sum is σ = 1520947296. Its totient is φ = 436112640.

The previous prime is 868819417. The next prime is 868819433. The reversal of 868819425 is 524918868.

It is an interprime number because it is at equal distance from previous prime (868819417) and next prime (868819433).

It is not a de Polignac number, because 868819425 - 2³ = 868819417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339439 + ... + 341988.

It is an arithmetic number, because the mean of its divisors is an integer number (63372804).

Almost surely, 2^868819425 is an apocalyptic number.

868819425 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

868819425 is a deficient number, since it is larger than the sum of its proper divisors (652127871).

868819425 is a wasteful number, since it uses less digits than its factorization.

868819425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681457 (or 681452 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 868819425 is about 29475.7429931800. The cubic root of 868819425 is about 954.2082653395.

The spelling of 868819425 in words is "eight hundred sixty-eight million, eight hundred nineteen thousand, four hundred twenty-five".