1225541015 has 8 divisors (see below), whose sum is σ = 1521361440. Its totient is φ = 946624672.

The previous prime is 1225540997. The next prime is 1225541017. The reversal of 1225541015 is 5101455221.

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

It is a cyclic number.

It is not a de Polignac number, because 1225541015 - 2⁶ = 1225540951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225541017) 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 7 ways as a sum of consecutive naturals, for example, 4225859 + ... + 4226148.

It is an arithmetic number, because the mean of its divisors is an integer number (190170180).

Almost surely, 2^1225541015 is an apocalyptic number.

1225541015 is a deficient number, since it is larger than the sum of its proper divisors (295820425).

1225541015 is an equidigital number, since it uses as much as digits as its factorization.

1225541015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8452041.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1225541015 is about 35007.7279325580. The cubic root of 1225541015 is about 1070.1449755523.

Adding to 1225541015 its reverse (5101455221), we get a palindrome (6326996236).

The spelling of 1225541015 in words is "one billion, two hundred twenty-five million, five hundred forty-one thousand, fifteen".