1225964265 has 64 divisors (see below), whose sum is σ = 2214604800. Its totient is φ = 575437824.

The previous prime is 1225964237. The next prime is 1225964269. The reversal of 1225964265 is 5624695221.

It is not a de Polignac number, because 1225964265 - 2⁷ = 1225964137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225964269) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 381154 + ... + 384356.

It is an arithmetic number, because the mean of its divisors is an integer number (34603200).

Almost surely, 2^1225964265 is an apocalyptic number.

1225964265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225964265 is a deficient number, since it is larger than the sum of its proper divisors (988640535).

1225964265 is a wasteful number, since it uses less digits than its factorization.

1225964265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 259200, while the sum is 42.

The square root of 1225964265 is about 35013.7725045446. The cubic root of 1225964265 is about 1070.2681556345.

The spelling of 1225964265 in words is "one billion, two hundred twenty-five million, nine hundred sixty-four thousand, two hundred sixty-five".