187225157 has 8 divisors (see below), whose sum is σ = 214080000. Its totient is φ = 160397424.

The previous prime is 187225141. The next prime is 187225163. The reversal of 187225157 is 751522781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187225157 - 2⁴ = 187225141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 187225157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187225187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11219 + ... + 22367.

It is an arithmetic number, because the mean of its divisors is an integer number (26760000).

Almost surely, 2^187225157 is an apocalyptic number.

It is an amenable number.

187225157 is a deficient number, since it is larger than the sum of its proper divisors (26854843).

187225157 is a wasteful number, since it uses less digits than its factorization.

187225157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13555.

The product of its digits is 39200, while the sum is 38.

The square root of 187225157 is about 13683.0244098299. The cubic root of 187225157 is about 572.0773252352.

The spelling of 187225157 in words is "one hundred eighty-seven million, two hundred twenty-five thousand, one hundred fifty-seven".