27547700625 has 45 divisors (see below), whose sum is σ = 49745466199. Its totient is φ = 14685468000.

The previous prime is 27547700623. The next prime is 27547700629. The reversal of 27547700625 is 52600774572.

The square root of 27547700625 is 165975.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 3580945281 + 23966755344 = 59841^2 + 154812^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 27547700625 - 2¹ = 27547700623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27547700623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 12447019 + ... + 12449231.

Almost surely, 2^27547700625 is an apocalyptic number.

27547700625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27547700625 is the 165975-th square number.

27547700625 is the 82988-th centered octagonal number.

It is an amenable number.

27547700625 is a deficient number, since it is larger than the sum of its proper divisors (22197765574).

27547700625 is an frugal number, since it uses more digits than its factorization.

27547700625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 27547700625 in words is "twenty-seven billion, five hundred forty-seven million, seven hundred thousand, six hundred twenty-five".