1220630825 has 12 divisors (see below), whose sum is σ = 1514040000. Its totient is φ = 976209360.

The previous prime is 1220630743. The next prime is 1220630839. The reversal of 1220630825 is 5280360221.

It is a de Polignac number, because none of the positive numbers 2^k-1220630825 is a prime.

It is a super-2 number, since 2×1220630825² = 2979879221880361250, which contains 22 as substring.

It is a Curzon number.

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, 120092 + ... + 129858.

It is an arithmetic number, because the mean of its divisors is an integer number (126170000).

Almost surely, 2^1220630825 is an apocalyptic number.

It is an amenable number.

1220630825 is a deficient number, since it is larger than the sum of its proper divisors (293409175).

1220630825 is an equidigital number, since it uses as much as digits as its factorization.

1220630825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14776 (or 14771 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1220630825 is about 34937.5274597388. The cubic root of 1220630825 is about 1068.7138665212.

The spelling of 1220630825 in words is "one billion, two hundred twenty million, six hundred thirty thousand, eight hundred twenty-five".