27530405625 has 80 divisors (see below), whose sum is σ = 49367197440. Its totient is φ = 13591680000.

The previous prime is 27530405621. The next prime is 27530405647. The reversal of 27530405625 is 52650403572.

It is a happy number.

It is not a de Polignac number, because 27530405625 - 2² = 27530405621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27530405621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1937296 + ... + 1951454.

It is an arithmetic number, because the mean of its divisors is an integer number (617089968).

Almost surely, 2^27530405625 is an apocalyptic number.

27530405625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27530405625 is a deficient number, since it is larger than the sum of its proper divisors (21836791815).

27530405625 is a wasteful number, since it uses less digits than its factorization.

27530405625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14260 (or 14245 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 39.

The spelling of 27530405625 in words is "twenty-seven billion, five hundred thirty million, four hundred five thousand, six hundred twenty-five".