6425749 has 8 divisors (see below), whose sum is σ = 7129440. Its totient is φ = 5742000.

The previous prime is 6425737. The next prime is 6425761. The reversal of 6425749 is 9475246.

It is an interprime number because it is at equal distance from previous prime (6425737) and next prime (6425761).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6425749 - 2⁷ = 6425621 is a prime.

It is a super-2 number, since 2×6425749² = 82580500422002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4302 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (891180).

Almost surely, 2^6425749 is an apocalyptic number.

It is an amenable number.

6425749 is a deficient number, since it is larger than the sum of its proper divisors (703691).

6425749 is a wasteful number, since it uses less digits than its factorization.

6425749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971.

The product of its digits is 60480, while the sum is 37.

The square root of 6425749 is about 2534.9061126598. The cubic root of 6425749 is about 185.9122123980.

The spelling of 6425749 in words is "six million, four hundred twenty-five thousand, seven hundred forty-nine".