1225441525 has 48 divisors (see below), whose sum is σ = 1901128320. Its totient is φ = 761241600.

The previous prime is 1225441523. The next prime is 1225441543. The reversal of 1225441525 is 5251445221.

It is not a de Polignac number, because 1225441525 - 2¹ = 1225441523 is a prime.

It is a super-3 number, since 3×1225441525³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225441523) by changing a digit.

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, 647781 + ... + 649669.

It is an arithmetic number, because the mean of its divisors is an integer number (39606840).

Almost surely, 2^1225441525 is an apocalyptic number.

It is an amenable number.

1225441525 is a deficient number, since it is larger than the sum of its proper divisors (675686795).

1225441525 is a wasteful number, since it uses less digits than its factorization.

1225441525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2249 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 1225441525 is about 35006.3069317516. The cubic root of 1225441525 is about 1070.1160164767.

Adding to 1225441525 its reverse (5251445221), we get a palindrome (6476886746).

The spelling of 1225441525 in words is "one billion, two hundred twenty-five million, four hundred forty-one thousand, five hundred twenty-five".