1225350525 has 24 divisors (see below), whose sum is σ = 2315329984. Its totient is φ = 560160000.

The previous prime is 1225350481. The next prime is 1225350541. The reversal of 1225350525 is 5250535221.

It is not a de Polignac number, because 1225350525 - 2⁷ = 1225350397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1225350492 and 1225350501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166476 + ... + 1167525.

Almost surely, 2^1225350525 is an apocalyptic number.

1225350525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225350525 is a deficient number, since it is larger than the sum of its proper divisors (1089979459).

1225350525 is a wasteful number, since it uses less digits than its factorization.

1225350525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334021 (or 2334016 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 1225350525 is about 35005.0071418362. The cubic root of 1225350525 is about 1070.0895272573.

Adding to 1225350525 its reverse (5250535221), we get a palindrome (6475885746).

The spelling of 1225350525 in words is "one billion, two hundred twenty-five million, three hundred fifty thousand, five hundred twenty-five".