1225425465 has 48 divisors (see below), whose sum is σ = 2326034880. Its totient is φ = 591872640.

The previous prime is 1225425451. The next prime is 1225425497. The reversal of 1225425465 is 5645245221.

1225425465 is a `hidden beast` number, since 1 + 2 + 2 + 542 + 54 + 65 = 666.

It is not a de Polignac number, because 1225425465 - 2⁹ = 1225424953 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128554 + ... + 137756.

It is an arithmetic number, because the mean of its divisors is an integer number (48459060).

Almost surely, 2^1225425465 is an apocalyptic number.

1225425465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225425465 is a deficient number, since it is larger than the sum of its proper divisors (1100609415).

1225425465 is a wasteful number, since it uses less digits than its factorization.

1225425465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494 (or 9491 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 1225425465 is about 35006.0775437637. The cubic root of 1225425465 is about 1070.1113416614. Note that the first 3 decimals are identical.

The spelling of 1225425465 in words is "one billion, two hundred twenty-five million, four hundred twenty-five thousand, four hundred sixty-five".