1221625486 has 8 divisors (see below), whose sum is σ = 1832614560. Its totient is φ = 610753968.

The previous prime is 1221625477. The next prime is 1221625499. The reversal of 1221625486 is 6845261221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4330 + ... + 49618.

It is an arithmetic number, because the mean of its divisors is an integer number (229076820).

Almost surely, 2^1221625486 is an apocalyptic number.

1221625486 is a deficient number, since it is larger than the sum of its proper divisors (610989074).

1221625486 is a wasteful number, since it uses less digits than its factorization.

1221625486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58778.

The product of its digits is 46080, while the sum is 37.

The square root of 1221625486 is about 34951.7594120811. The cubic root of 1221625486 is about 1069.0040769524.

The spelling of 1221625486 in words is "one billion, two hundred twenty-one million, six hundred twenty-five thousand, four hundred eighty-six".