83783385225 has 72 divisors (see below), whose sum is σ = 159310374912. Its totient is φ = 41945433600.

The previous prime is 83783385181. The next prime is 83783385247. The reversal of 83783385225 is 52258338738.

It is a happy number.

83783385225 is a `hidden beast` number, since 8 + 3 + 7 + 83 + 38 + 522 + 5 = 666.

It is not a de Polignac number, because 83783385225 - 2¹³ = 83783377033 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1436380 + ... + 1493570.

It is an arithmetic number, because the mean of its divisors is an integer number (2212644096).

Almost surely, 2^83783385225 is an apocalyptic number.

83783385225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83783385225 is a deficient number, since it is larger than the sum of its proper divisors (75526989687).

83783385225 is a wasteful number, since it uses less digits than its factorization.

83783385225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57607 (or 57599 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 83783385225 in words is "eighty-three billion, seven hundred eighty-three million, three hundred eighty-five thousand, two hundred twenty-five".