27752525247 has 4 divisors (see below), whose sum is σ = 37003367000. Its totient is φ = 18501683496.

The previous prime is 27752525239. The next prime is 27752525321. The reversal of 27752525247 is 74252525772.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27752525247 - 2³ = 27752525239 is a prime.

It is a super-2 number, since 2×27752525247² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27752525196 and 27752525205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27752515247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625420872 + ... + 4625420877.

It is an arithmetic number, because the mean of its divisors is an integer number (9250841750).

Almost surely, 2^27752525247 is an apocalyptic number.

27752525247 is a deficient number, since it is larger than the sum of its proper divisors (9250841753).

27752525247 is an equidigital number, since it uses as much as digits as its factorization.

27752525247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250841752.

The product of its digits is 2744000, while the sum is 48.

The spelling of 27752525247 in words is "twenty-seven billion, seven hundred fifty-two million, five hundred twenty-five thousand, two hundred forty-seven".