1214225757 has 12 divisors (see below), whose sum is σ = 1754248860. Its totient is φ = 809314368.

The previous prime is 1214225713. The next prime is 1214225759. The reversal of 1214225757 is 7575224121.

It can be written as a sum of positive squares in 2 ways, for example, as 669049956 + 545175801 = 25866^2 + 23349^2 .

It is not a de Polignac number, because 1214225757 - 2¹² = 1214221661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214225759) 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, 43723 + ... + 65879.

It is an arithmetic number, because the mean of its divisors is an integer number (146187405).

Almost surely, 2^1214225757 is an apocalyptic number.

It is an amenable number.

1214225757 is a deficient number, since it is larger than the sum of its proper divisors (540023103).

1214225757 is a wasteful number, since it uses less digits than its factorization.

1214225757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28252 (or 28249 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 1214225757 is about 34845.7423080640. The cubic root of 1214225757 is about 1066.8412847699.

Adding to 1214225757 its reverse (7575224121), we get a palindrome (8789449878).

The spelling of 1214225757 in words is "one billion, two hundred fourteen million, two hundred twenty-five thousand, seven hundred fifty-seven".