755425809 has 24 divisors (see below), whose sum is σ = 1104386400. Its totient is φ = 497554368.

The previous prime is 755425747. The next prime is 755425841. The reversal of 755425809 is 908524557.

It is not a de Polignac number, because 755425809 - 2¹¹ = 755423761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (755425109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278542 + ... + 281240.

It is an arithmetic number, because the mean of its divisors is an integer number (46016100).

Almost surely, 2^755425809 is an apocalyptic number.

It is an amenable number.

755425809 is a deficient number, since it is larger than the sum of its proper divisors (348960591).

755425809 is a wasteful number, since it uses less digits than its factorization.

755425809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The square root of 755425809 is about 27485.0106239747. The cubic root of 755425809 is about 910.7460006013.

The spelling of 755425809 in words is "seven hundred fifty-five million, four hundred twenty-five thousand, eight hundred nine".