945725409 has 32 divisors (see below), whose sum is σ = 1452297600. Its totient is φ = 607521600.

The previous prime is 945725387. The next prime is 945725423. The reversal of 945725409 is 904527549.

It is not a de Polignac number, because 945725409 - 2¹⁵ = 945692641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (945725479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548022 + ... + 549744.

It is an arithmetic number, because the mean of its divisors is an integer number (45384300).

Almost surely, 2^945725409 is an apocalyptic number.

It is an amenable number.

945725409 is a deficient number, since it is larger than the sum of its proper divisors (506572191).

945725409 is a wasteful number, since it uses less digits than its factorization.

945725409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 945725409 is about 30752.6488127446. The cubic root of 945725409 is about 981.5709252302.

The spelling of 945725409 in words is "nine hundred forty-five million, seven hundred twenty-five thousand, four hundred nine".