814421825 has 24 divisors (see below), whose sum is σ = 1156890240. Its totient is φ = 557136000.

The previous prime is 814421807. The next prime is 814421831. The reversal of 814421825 is 528124418.

It is not a de Polignac number, because 814421825 - 2²⁶ = 747312961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 71525 + ... + 82125.

It is an arithmetic number, because the mean of its divisors is an integer number (48203760).

Almost surely, 2^814421825 is an apocalyptic number.

It is an amenable number.

814421825 is a deficient number, since it is larger than the sum of its proper divisors (342468415).

814421825 is a wasteful number, since it uses less digits than its factorization.

814421825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11057 (or 11052 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 814421825 is about 28538.0767572028. The cubic root of 814421825 is about 933.8629261277.

The spelling of 814421825 in words is "eight hundred fourteen million, four hundred twenty-one thousand, eight hundred twenty-five".