1220102025 has 24 divisors (see below), whose sum is σ = 2019421344. Its totient is φ = 650016000.

The previous prime is 1220102011. The next prime is 1220102033. The reversal of 1220102025 is 5202010221.

It is not a de Polignac number, because 1220102025 - 2¹² = 1220097929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1220101995 and 1220102013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64950 + ... + 81600.

It is an arithmetic number, because the mean of its divisors is an integer number (84142556).

Almost surely, 2^1220102025 is an apocalyptic number.

1220102025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220102025 is a deficient number, since it is larger than the sum of its proper divisors (799319319).

1220102025 is a wasteful number, since it uses less digits than its factorization.

1220102025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641 (or 17636 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1220102025 is about 34929.9588462397. The cubic root of 1220102025 is about 1068.5595153147.

Adding to 1220102025 its reverse (5202010221), we get a palindrome (6422112246).

The spelling of 1220102025 in words is "one billion, two hundred twenty million, one hundred two thousand, twenty-five".