647510425 has 12 divisors (see below), whose sum is σ = 816077356. Its totient is φ = 509515200.

The previous prime is 647510419. The next prime is 647510429. The reversal of 647510425 is 524015746.

It can be written as a sum of positive squares in 6 ways, for example, as 269091216 + 378419209 = 16404^2 + 19453^2 .

It is not a de Polignac number, because 647510425 - 2⁹ = 647509913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647510429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210774 + ... + 213823.

Almost surely, 2^647510425 is an apocalyptic number.

It is an amenable number.

647510425 is a deficient number, since it is larger than the sum of its proper divisors (168566931).

647510425 is a wasteful number, since it uses less digits than its factorization.

647510425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424668 (or 424663 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 647510425 is about 25446.2261445583. The cubic root of 647510425 is about 865.1317584718.

It can be divided in two parts, 6475 and 10425, that added together give a square (16900 = 130²).

The spelling of 647510425 in words is "six hundred forty-seven million, five hundred ten thousand, four hundred twenty-five".