187354794025 has 81 divisors (see below), whose sum is σ = 275393175141. Its totient is φ = 126072166080.

The previous prime is 187354793999. The next prime is 187354794037. The reversal of 187354794025 is 520497453781.

The square root of 187354794025 is 432845.

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

It can be written as a sum of positive squares in 4 ways, for example, as 55916642089 + 131438151936 = 236467^2 + 362544^2 .

It is not a de Polignac number, because 187354794025 - 2⁷ = 187354793897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1257414651 + ... + 1257414799.

Almost surely, 2^187354794025 is an apocalyptic number.

187354794025 is the 432845-th square number.

187354794025 is the 216423-rd centered octagonal number.

It is an amenable number.

187354794025 is a deficient number, since it is larger than the sum of its proper divisors (88038381116).

187354794025 is an frugal number, since it uses more digits than its factorization.

187354794025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 187354794025 in words is "one hundred eighty-seven billion, three hundred fifty-four million, seven hundred ninety-four thousand, twenty-five".