1220151325 has 6 divisors (see below), whose sum is σ = 1512987674. Its totient is φ = 976121040.

The previous prime is 1220151301. The next prime is 1220151343. The reversal of 1220151325 is 5231510221.

It can be written as a sum of positive squares in 3 ways, for example, as 383611396 + 836539929 = 19586^2 + 28923^2 .

It is not a de Polignac number, because 1220151325 - 2²⁵ = 1186596893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220151296 and 1220151305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24403002 + ... + 24403051.

Almost surely, 2^1220151325 is an apocalyptic number.

It is an amenable number.

1220151325 is a deficient number, since it is larger than the sum of its proper divisors (292836349).

1220151325 is an equidigital number, since it uses as much as digits as its factorization.

1220151325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48806063 (or 48806058 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1220151325 is about 34930.6645370511. The cubic root of 1220151325 is about 1068.5739073556.

Adding to 1220151325 its reverse (5231510221), we get a palindrome (6451661546).

The spelling of 1220151325 in words is "one billion, two hundred twenty million, one hundred fifty-one thousand, three hundred twenty-five".