1220025425 has 12 divisors (see below), whose sum is σ = 1513723056. Its totient is φ = 975445200.

The previous prime is 1220025413. The next prime is 1220025487. The reversal of 1220025425 is 5245200221.

It is not a de Polignac number, because 1220025425 - 2¹⁴ = 1220009041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220025425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31802 + ... + 58748.

It is an arithmetic number, because the mean of its divisors is an integer number (126143588).

Almost surely, 2^1220025425 is an apocalyptic number.

It is an amenable number.

1220025425 is a deficient number, since it is larger than the sum of its proper divisors (293697631).

1220025425 is a wasteful number, since it uses less digits than its factorization.

1220025425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28768 (or 28763 counting only the distinct ones).

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

The square root of 1220025425 is about 34928.8623490660. The cubic root of 1220025425 is about 1068.5371528756.

Adding to 1220025425 its reverse (5245200221), we get a palindrome (6465225646).

The spelling of 1220025425 in words is "one billion, two hundred twenty million, twenty-five thousand, four hundred twenty-five".