220825138 has 8 divisors (see below), whose sum is σ = 350722332. Its totient is φ = 103917696.

The previous prime is 220825133. The next prime is 220825147. The reversal of 220825138 is 831528022.

It can be written as a sum of positive squares in 2 ways, for example, as 210047049 + 10778089 = 14493^2 + 3283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (220825133) 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, 3247395 + ... + 3247462.

Almost surely, 2^220825138 is an apocalyptic number.

220825138 is a deficient number, since it is larger than the sum of its proper divisors (129897194).

220825138 is a wasteful number, since it uses less digits than its factorization.

220825138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494876.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 220825138 is about 14860.1863379972. The cubic root of 220825138 is about 604.4348596400.

The spelling of 220825138 in words is "two hundred twenty million, eight hundred twenty-five thousand, one hundred thirty-eight".