6347720925 has 480 divisors, whose sum is σ = 15964256000. Its totient is φ = 2469035520.

The previous prime is 6347720917. The next prime is 6347720993. The reversal of 6347720925 is 5290277436.

6347720925 is a `hidden beast` number, since 634 + 7 + 7 + 2 + 0 + 9 + 2 + 5 = 666.

It is not a de Polignac number, because 6347720925 - 2³ = 6347720917 is a prime.

It is a super-4 number, since 4×6347720925⁴ (a number of 40 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 171560007 + ... + 171560043.

Almost surely, 2^6347720925 is an apocalyptic number.

6347720925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6347720925 is an abundant number, since it is smaller than the sum of its proper divisors (9616535075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6347720925 is a wasteful number, since it uses less digits than its factorization.

6347720925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 6347720925 is about 79672.5857808067. The cubic root of 6347720925 is about 1851.5663311249.

The spelling of 6347720925 in words is "six billion, three hundred forty-seven million, seven hundred twenty thousand, nine hundred twenty-five".