647055425 has 24 divisors (see below), whose sum is σ = 818697600. Its totient is φ = 507199680.

The previous prime is 647055421. The next prime is 647055427. The reversal of 647055425 is 524550746.

It is not a de Polignac number, because 647055425 - 2² = 647055421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647055421) 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, 273347 + ... + 275703.

It is an arithmetic number, because the mean of its divisors is an integer number (34112400).

Almost surely, 2^647055425 is an apocalyptic number.

It is an amenable number.

647055425 is a deficient number, since it is larger than the sum of its proper divisors (171642175).

647055425 is a wasteful number, since it uses less digits than its factorization.

647055425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The square root of 647055425 is about 25437.2841514184. The cubic root of 647055425 is about 864.9290707764.

The spelling of 647055425 in words is "six hundred forty-seven million, fifty-five thousand, four hundred twenty-five".