1225621054 has 16 divisors (see below), whose sum is σ = 2105633376. Its totient is φ = 524124000.

The previous prime is 1225621039. The next prime is 1225621063. The reversal of 1225621054 is 4501265221.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 88497 + ... + 101404.

It is an arithmetic number, because the mean of its divisors is an integer number (131602086).

Almost surely, 2^1225621054 is an apocalyptic number.

1225621054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1225621054 is a deficient number, since it is larger than the sum of its proper divisors (880012322).

1225621054 is a wasteful number, since it uses less digits than its factorization.

1225621054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190371.

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

The square root of 1225621054 is about 35008.8710757716. The cubic root of 1225621054 is about 1070.1682717858.

Adding to 1225621054 its reverse (4501265221), we get a palindrome (5726886275).

The spelling of 1225621054 in words is "one billion, two hundred twenty-five million, six hundred twenty-one thousand, fifty-four".