27125749197 has 12 divisors (see below), whose sum is σ = 39254069244. Its totient is φ = 18050402880.

The previous prime is 27125749187. The next prime is 27125749201. The reversal of 27125749197 is 79194752172.

27125749197 is a `hidden beast` number, since 2 + 7 + 12 + 57 + 491 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9802188036 + 17323561161 = 99006^2 + 131619^2 .

It is not a de Polignac number, because 27125749197 - 2³⁴ = 9945880013 is a prime.

It is a super-2 number, since 2×27125749197² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27125749187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2780688 + ... + 2790425.

It is an arithmetic number, because the mean of its divisors is an integer number (3271172437).

Almost surely, 2^27125749197 is an apocalyptic number.

It is an amenable number.

27125749197 is a deficient number, since it is larger than the sum of its proper divisors (12128320047).

27125749197 is a wasteful number, since it uses less digits than its factorization.

27125749197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571660 (or 5571657 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The spelling of 27125749197 in words is "twenty-seven billion, one hundred twenty-five million, seven hundred forty-nine thousand, one hundred ninety-seven".