1225964263 has 8 divisors (see below), whose sum is σ = 1244354400. Its totient is φ = 1207617408.

The previous prime is 1225964237. The next prime is 1225964269. The reversal of 1225964263 is 3624695221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225964263 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 48678 + ... + 69436.

It is an arithmetic number, because the mean of its divisors is an integer number (155544300).

Almost surely, 2^1225964263 is an apocalyptic number.

1225964263 is a deficient number, since it is larger than the sum of its proper divisors (18390137).

1225964263 is an equidigital number, since it uses as much as digits as its factorization.

1225964263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21641.

The product of its digits is 155520, while the sum is 40.

The square root of 1225964263 is about 35013.7724759844. The cubic root of 1225964263 is about 1070.2681550525.

The spelling of 1225964263 in words is "one billion, two hundred twenty-five million, nine hundred sixty-four thousand, two hundred sixty-three".