220780125 has 36 divisors (see below), whose sum is σ = 398893404. Its totient is φ = 117483600.

The previous prime is 220780123. The next prime is 220780127. The reversal of 220780125 is 521087022.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (220780123) and next prime (220780127).

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 213715161 = 2658^2 + 14619^2 .

It is not a de Polignac number, because 220780125 - 2¹ = 220780123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220780123) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 498154 + ... + 498596.

Almost surely, 2^220780125 is an apocalyptic number.

220780125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220780125 is a deficient number, since it is larger than the sum of its proper divisors (178113279).

220780125 is an frugal number, since it uses more digits than its factorization.

220780125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 220780125 is about 14858.6717104861. The cubic root of 220780125 is about 604.3937875117.

The spelling of 220780125 in words is "two hundred twenty million, seven hundred eighty thousand, one hundred twenty-five".