1225133015 has 16 divisors (see below), whose sum is σ = 1557412320. Its totient is φ = 922596480.

The previous prime is 1225133009. The next prime is 1225133017. The reversal of 1225133015 is 5103315221.

It is a happy number.

It is not a de Polignac number, because 1225133015 - 2⁸ = 1225132759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225133017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26156 + ... + 55985.

It is an arithmetic number, because the mean of its divisors is an integer number (97338270).

Almost surely, 2^1225133015 is an apocalyptic number.

1225133015 is a deficient number, since it is larger than the sum of its proper divisors (332279305).

1225133015 is a wasteful number, since it uses less digits than its factorization.

1225133015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82322.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1225133015 is about 35001.9001627055. The cubic root of 1225133015 is about 1070.0262068872.

Adding to 1225133015 its reverse (5103315221), we get a palindrome (6328448236).

The spelling of 1225133015 in words is "one billion, two hundred twenty-five million, one hundred thirty-three thousand, fifteen".