1345447425 has 96 divisors (see below), whose sum is σ = 2630403072. Its totient is φ = 594074880.

The previous prime is 1345447423. The next prime is 1345447471. The reversal of 1345447425 is 5247445431.

It is not a de Polignac number, because 1345447425 - 2¹ = 1345447423 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345447423) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2415247 + ... + 2415803.

It is an arithmetic number, because the mean of its divisors is an integer number (27400032).

Almost surely, 2^1345447425 is an apocalyptic number.

1345447425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345447425 is a deficient number, since it is larger than the sum of its proper divisors (1284955647).

1345447425 is a wasteful number, since it uses less digits than its factorization.

1345447425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 722 counting only the distinct ones).

The product of its digits is 268800, while the sum is 39.

The square root of 1345447425 is about 36680.3411243680. The cubic root of 1345447425 is about 1103.9656926891.

The spelling of 1345447425 in words is "one billion, three hundred forty-five million, four hundred forty-seven thousand, four hundred twenty-five".