1220615254 has 16 divisors (see below), whose sum is σ = 1856977920. Its totient is φ = 601646760.

The previous prime is 1220615213. The next prime is 1220615257. The reversal of 1220615254 is 4525160221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220615257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102259 + ... + 113569.

It is an arithmetic number, because the mean of its divisors is an integer number (116061120).

Almost surely, 2^1220615254 is an apocalyptic number.

1220615254 is a deficient number, since it is larger than the sum of its proper divisors (636362666).

1220615254 is a wasteful number, since it uses less digits than its factorization.

1220615254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1220615254 is about 34937.3046184161. The cubic root of 1220615254 is about 1068.7093221457.

Adding to 1220615254 its reverse (4525160221), we get a palindrome (5745775475).

The spelling of 1220615254 in words is "one billion, two hundred twenty million, six hundred fifteen thousand, two hundred fifty-four".