1225552525 has 48 divisors (see below), whose sum is σ = 1676798928. Its totient is φ = 884736000.

The previous prime is 1225552511. The next prime is 1225552541. The reversal of 1225552525 is 5252555221.

It can be written as a sum of positive squares in 24 ways, for example, as 1071842121 + 153710404 = 32739^2 + 12398^2 .

It is not a de Polignac number, because 1225552525 - 2²⁹ = 688681613 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 1062349 + ... + 1063501.

It is an arithmetic number, because the mean of its divisors is an integer number (34933311).

Almost surely, 2^1225552525 is an apocalyptic number.

It is an amenable number.

1225552525 is a deficient number, since it is larger than the sum of its proper divisors (451246403).

1225552525 is a wasteful number, since it uses less digits than its factorization.

1225552525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1277 counting only the distinct ones).

The product of its digits is 50000, while the sum is 34.

The square root of 1225552525 is about 35007.8923244459. The cubic root of 1225552525 is about 1070.1483257272.

The spelling of 1225552525 in words is "one billion, two hundred twenty-five million, five hundred fifty-two thousand, five hundred twenty-five".