815225926 has 4 divisors (see below), whose sum is σ = 1222838892. Its totient is φ = 407612962.

The previous prime is 815225911. The next prime is 815225953. The reversal of 815225926 is 629522518.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203806480 + ... + 203806483.

It is an arithmetic number, because the mean of its divisors is an integer number (305709723).

Almost surely, 2^815225926 is an apocalyptic number.

815225926 is a deficient number, since it is larger than the sum of its proper divisors (407612966).

815225926 is a wasteful number, since it uses less digits than its factorization.

815225926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407612965.

The product of its digits is 86400, while the sum is 40.

The square root of 815225926 is about 28552.1614943598. The cubic root of 815225926 is about 934.1701678586.

The spelling of 815225926 in words is "eight hundred fifteen million, two hundred twenty-five thousand, nine hundred twenty-six".