66353425 has 24 divisors (see below), whose sum is σ = 84816000. Its totient is φ = 51468480.

The previous prime is 66353393. The next prime is 66353461. The reversal of 66353425 is 52435366.

It is not a de Polignac number, because 66353425 - 2⁵ = 66353393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174886 + ... + 175264.

It is an arithmetic number, because the mean of its divisors is an integer number (3534000).

Almost surely, 2^66353425 is an apocalyptic number.

It is an amenable number.

66353425 is a deficient number, since it is larger than the sum of its proper divisors (18462575).

66353425 is a wasteful number, since it uses less digits than its factorization.

66353425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 580 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 66353425 is about 8145.7611676258. The cubic root of 66353425 is about 404.8440694241.

The spelling of 66353425 in words is "sixty-six million, three hundred fifty-three thousand, four hundred twenty-five".