1220425025 has 12 divisors (see below), whose sum is σ = 1517698992. Its totient is φ = 973519440.

The previous prime is 1220425021. The next prime is 1220425051. The reversal of 1220425025 is 5205240221.

It is not a de Polignac number, because 1220425025 - 2² = 1220425021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220425021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61667 + ... + 79016.

It is an arithmetic number, because the mean of its divisors is an integer number (126474916).

Almost surely, 2^1220425025 is an apocalyptic number.

It is an amenable number.

1220425025 is a deficient number, since it is larger than the sum of its proper divisors (297273967).

1220425025 is a wasteful number, since it uses less digits than its factorization.

1220425025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141040 (or 141035 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1220425025 is about 34934.5820785078. The cubic root of 1220425025 is about 1068.6538009465.

Adding to 1220425025 its reverse (5205240221), we get a palindrome (6425665246).

The spelling of 1220425025 in words is "one billion, two hundred twenty million, four hundred twenty-five thousand, twenty-five".