870825801 has 4 divisors (see below), whose sum is σ = 1161101072. Its totient is φ = 580550532.

The previous prime is 870825763. The next prime is 870825817. The reversal of 870825801 is 108528078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 870825801 - 2²³ = 862437193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870825801.

It is not an unprimeable number, because it can be changed into a prime (870825401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145137631 + ... + 145137636.

It is an arithmetic number, because the mean of its divisors is an integer number (290275268).

Almost surely, 2^870825801 is an apocalyptic number.

It is an amenable number.

870825801 is a deficient number, since it is larger than the sum of its proper divisors (290275271).

870825801 is a wasteful number, since it uses less digits than its factorization.

870825801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290275270.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 870825801 is about 29509.7577252000. The cubic root of 870825801 is about 954.9422225035.

The spelling of 870825801 in words is "eight hundred seventy million, eight hundred twenty-five thousand, eight hundred one".