1220000243025 has 48 divisors (see below), whose sum is σ = 2065598846784. Its totient is φ = 635035188480.

The previous prime is 1220000243023. The next prime is 1220000243041. The reversal of 1220000243025 is 5203420000221.

It is not a de Polignac number, because 1220000243025 - 2¹ = 1220000243023 is a prime.

It is a super-2 number, since 2×1220000243025² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220000242992 and 1220000243010.

It is not an unprimeable number, because it can be changed into a prime (1220000243023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3970207 + ... + 4266443.

It is an arithmetic number, because the mean of its divisors is an integer number (43033309308).

Almost surely, 2^{1220000243025} is an apocalyptic number.

1220000243025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220000243025 is a deficient number, since it is larger than the sum of its proper divisors (845598603759).

1220000243025 is a wasteful number, since it uses less digits than its factorization.

1220000243025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297570 (or 297565 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 1220000243025 its reverse (5203420000221), we get a palindrome (6423420243246).

The spelling of 1220000243025 in words is "one trillion, two hundred twenty billion, two hundred forty-three thousand, twenty-five".