1225802925 has 18 divisors (see below), whose sum is σ = 2195549642. Its totient is φ = 653761440.

The previous prime is 1225802909. The next prime is 1225802957. The reversal of 1225802925 is 5292085221.

It can be written as a sum of positive squares in 3 ways, for example, as 305165961 + 920636964 = 17469^2 + 30342^2 .

It is not a de Polignac number, because 1225802925 - 2⁴ = 1225802909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225802925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2723782 + ... + 2724231.

Almost surely, 2^1225802925 is an apocalyptic number.

1225802925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225802925 is a deficient number, since it is larger than the sum of its proper divisors (969746717).

1225802925 is a wasteful number, since it uses less digits than its factorization.

1225802925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448029 (or 5448021 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1225802925 is about 35011.4684782001. The cubic root of 1225802925 is about 1070.2212035754.

The spelling of 1225802925 in words is "one billion, two hundred twenty-five million, eight hundred two thousand, nine hundred twenty-five".