1220739025 has 24 divisors (see below), whose sum is σ = 1667714688. Its totient is φ = 879000000.

The previous prime is 1220739001. The next prime is 1220739059. The reversal of 1220739025 is 5209370221.

It is not a de Polignac number, because 1220739025 - 2⁵ = 1220738993 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5800 + ... + 49750.

It is an arithmetic number, because the mean of its divisors is an integer number (69488112).

Almost surely, 2^1220739025 is an apocalyptic number.

It is an amenable number.

1220739025 is a deficient number, since it is larger than the sum of its proper divisors (446975663).

1220739025 is a wasteful number, since it uses less digits than its factorization.

1220739025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44073 (or 44068 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1220739025 is about 34939.0759036355. The cubic root of 1220739025 is about 1068.7454434789.

The spelling of 1220739025 in words is "one billion, two hundred twenty million, seven hundred thirty-nine thousand, twenty-five".