1220425125 has 32 divisors (see below), whose sum is σ = 2100833280. Its totient is φ = 628443200.

The previous prime is 1220425093. The next prime is 1220425133. The reversal of 1220425125 is 5215240221.

It is not a de Polignac number, because 1220425125 - 2⁵ = 1220425093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220425095 and 1220425104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45237 + ... + 66986.

It is an arithmetic number, because the mean of its divisors is an integer number (65651040).

Almost surely, 2^1220425125 is an apocalyptic number.

1220425125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220425125 is a deficient number, since it is larger than the sum of its proper divisors (880408155).

1220425125 is a wasteful number, since it uses less digits than its factorization.

1220425125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112270 (or 112260 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1220425125 is about 34934.5835097543. The cubic root of 1220425125 is about 1068.6538301346.

Adding to 1220425125 its reverse (5215240221), we get a palindrome (6435665346).

The spelling of 1220425125 in words is "one billion, two hundred twenty million, four hundred twenty-five thousand, one hundred twenty-five".