6490921425 has 48 divisors (see below), whose sum is σ = 11210711040. Its totient is φ = 3307627840.

The previous prime is 6490921387. The next prime is 6490921441. The reversal of 6490921425 is 5241290946.

It is not a de Polignac number, because 6490921425 - 2¹⁴ = 6490905041 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2253136 + ... + 2256014.

It is an arithmetic number, because the mean of its divisors is an integer number (233556480).

Almost surely, 2^6490921425 is an apocalyptic number.

It is an amenable number.

6490921425 is a deficient number, since it is larger than the sum of its proper divisors (4719789615).

6490921425 is a wasteful number, since it uses less digits than its factorization.

6490921425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 6490921425 is about 80566.2548775851. The cubic root of 6490921425 is about 1865.3863047956.

The spelling of 6490921425 in words is "six billion, four hundred ninety million, nine hundred twenty-one thousand, four hundred twenty-five".