1225553045 has 16 divisors (see below), whose sum is σ = 1538773632. Its totient is φ = 935267520.

The previous prime is 1225553027. The next prime is 1225553053. The reversal of 1225553045 is 5403555221.

It is not a de Polignac number, because 1225553045 - 2¹⁶ = 1225487509 is a prime.

It is a super-2 number, since 2×1225553045² = 3003960532217544050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28610 + ... + 57180.

It is an arithmetic number, because the mean of its divisors is an integer number (96173352).

Almost surely, 2^1225553045 is an apocalyptic number.

It is an amenable number.

1225553045 is a deficient number, since it is larger than the sum of its proper divisors (313220587).

1225553045 is a wasteful number, since it uses less digits than its factorization.

1225553045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28972.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1225553045 is about 35007.8997513418. The cubic root of 1225553045 is about 1070.1484770812.

The spelling of 1225553045 in words is "one billion, two hundred twenty-five million, five hundred fifty-three thousand, forty-five".