6540632425 has 12 divisors (see below), whose sum is σ = 8140320256. Its totient is φ = 5213192400.

The previous prime is 6540632419. The next prime is 6540632431. The reversal of 6540632425 is 5242360456.

It is an interprime number because it is at equal distance from previous prime (6540632419) and next prime (6540632431).

It is not a de Polignac number, because 6540632425 - 2¹¹ = 6540630377 is a prime.

It is a super-2 number, since 2×6540632425² = 85559745037922761250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475929 + ... + 489478.

Almost surely, 2^6540632425 is an apocalyptic number.

It is an amenable number.

6540632425 is a deficient number, since it is larger than the sum of its proper divisors (1599687831).

6540632425 is a wasteful number, since it uses less digits than its factorization.

6540632425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965688 (or 965683 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 6540632425 is about 80874.1765027626. The cubic root of 6540632425 is about 1870.1362464715.

The spelling of 6540632425 in words is "six billion, five hundred forty million, six hundred thirty-two thousand, four hundred twenty-five".