27149500025 has 12 divisors (see below), whose sum is σ = 33667627500. Its totient is φ = 21718150080.

The previous prime is 27149499991. The next prime is 27149500043. The reversal of 27149500025 is 52000594172.

It can be written as a sum of positive squares in 6 ways, for example, as 9138786409 + 18010713616 = 95597^2 + 134204^2 .

It is not a de Polignac number, because 27149500025 - 2¹² = 27149495929 is a prime.

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, 503051 + ... + 554399.

It is an arithmetic number, because the mean of its divisors is an integer number (2805635625).

Almost surely, 2^27149500025 is an apocalyptic number.

27149500025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27149500025 is a deficient number, since it is larger than the sum of its proper divisors (6518127475).

27149500025 is a wasteful number, since it uses less digits than its factorization.

27149500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72508 (or 72503 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 27149500025 in words is "twenty-seven billion, one hundred forty-nine million, five hundred thousand, twenty-five".