1225060521 has 8 divisors (see below), whose sum is σ = 1633674240. Its totient is φ = 816576912.

The previous prime is 1225060519. The next prime is 1225060531. The reversal of 1225060521 is 1250605221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225060521 - 2¹ = 1225060519 is a prime.

It is a super-2 number, since 2×1225060521² = 3001546560225582882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1225060491 and 1225060500.

It is not an unprimeable number, because it can be changed into a prime (1225060531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7890 + ... + 50123.

It is an arithmetic number, because the mean of its divisors is an integer number (204209280).

Almost surely, 2^1225060521 is an apocalyptic number.

It is an amenable number.

1225060521 is a deficient number, since it is larger than the sum of its proper divisors (408613719).

1225060521 is an equidigital number, since it uses as much as digits as its factorization.

1225060521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65055.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1225060521 is about 35000.8645750359. The cubic root of 1225060521 is about 1070.0051011490.

Adding to 1225060521 its reverse (1250605221), we get a palindrome (2475665742).

It can be divided in two parts, 12250 and 60521, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 1225060521 in words is "one billion, two hundred twenty-five million, sixty thousand, five hundred twenty-one".