785772225 has 48 divisors (see below), whose sum is σ = 1649715840. Its totient is φ = 359208000.

The previous prime is 785772203. The next prime is 785772233. The reversal of 785772225 is 522277587.

785772225 is a `hidden beast` number, since 78 + 577 + 2 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 785772225 - 2⁵ = 785772193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78426 + ... + 87875.

It is an arithmetic number, because the mean of its divisors is an integer number (34369080).

Almost surely, 2^785772225 is an apocalyptic number.

785772225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

785772225 is an abundant number, since it is smaller than the sum of its proper divisors (863943615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

785772225 is a wasteful number, since it uses less digits than its factorization.

785772225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166327 (or 166316 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 785772225 is about 28031.6290108156. The cubic root of 785772225 is about 922.7815255509.

The spelling of 785772225 in words is "seven hundred eighty-five million, seven hundred seventy-two thousand, two hundred twenty-five".