1225413525 has 48 divisors (see below), whose sum is σ = 2323295744. Its totient is φ = 558290880.

The previous prime is 1225413523. The next prime is 1225413529. The reversal of 1225413525 is 5253145221.

It is not a de Polignac number, because 1225413525 - 2¹ = 1225413523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225413492 and 1225413501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225413523) 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, 157374 + ... + 164976.

Almost surely, 2^1225413525 is an apocalyptic number.

1225413525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225413525 is a deficient number, since it is larger than the sum of its proper divisors (1097882219).

1225413525 is a wasteful number, since it uses less digits than its factorization.

1225413525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7930 (or 7925 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 1225413525 is about 35005.9070015333. The cubic root of 1225413525 is about 1070.1078660873.

Adding to 1225413525 its reverse (5253145221), we get a palindrome (6478558746).

The spelling of 1225413525 in words is "one billion, two hundred twenty-five million, four hundred thirteen thousand, five hundred twenty-five".