1225205054 has 4 divisors (see below), whose sum is σ = 1837807584. Its totient is φ = 612602526.

The previous prime is 1225205053. The next prime is 1225205057. The reversal of 1225205054 is 4505025221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1225205054² = 3002254848694285832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225205053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306301262 + ... + 306301265.

It is an arithmetic number, because the mean of its divisors is an integer number (459451896).

Almost surely, 2^1225205054 is an apocalyptic number.

1225205054 is a deficient number, since it is larger than the sum of its proper divisors (612602530).

1225205054 is an equidigital number, since it uses as much as digits as its factorization.

1225205054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612602529.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1225205054 is about 35002.9292202810. The cubic root of 1225205054 is about 1070.0471793329.

The spelling of 1225205054 in words is "one billion, two hundred twenty-five million, two hundred five thousand, fifty-four".