6401625 has 32 divisors (see below), whose sum is σ = 10927488. Its totient is φ = 3326400.

The previous prime is 6401621. The next prime is 6401669. The reversal of 6401625 is 5261046.

It is not a de Polignac number, because 6401625 - 2² = 6401621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6401595 and 6401604.

It is not an unprimeable number, because it can be changed into a prime (6401621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15927 + ... + 16323.

It is an arithmetic number, because the mean of its divisors is an integer number (341484).

Almost surely, 2^6401625 is an apocalyptic number.

It is an amenable number.

6401625 is a deficient number, since it is larger than the sum of its proper divisors (4525863).

6401625 is a wasteful number, since it uses less digits than its factorization.

6401625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6401625 is about 2530.1432765755. The cubic root of 6401625 is about 185.6792657270.

The spelling of 6401625 in words is "six million, four hundred one thousand, six hundred twenty-five".