125131149 has 72 divisors (see below), whose sum is σ = 222217632. Its totient is φ = 69750720.

The previous prime is 125131147. The next prime is 125131177. The reversal of 125131149 is 941131521.

It is a happy number.

125131149 is a `hidden beast` number, since 1 + 2 + 513 + 1 + 149 = 666.

It is not a de Polignac number, because 125131149 - 2¹ = 125131147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125131141) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 451599 + ... + 451875.

It is an arithmetic number, because the mean of its divisors is an integer number (3086356).

Almost surely, 2^125131149 is an apocalyptic number.

It is an amenable number.

125131149 is a deficient number, since it is larger than the sum of its proper divisors (97086483).

125131149 is a wasteful number, since it uses less digits than its factorization.

125131149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 304 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 125131149 is about 11186.2035114689. The cubic root of 125131149 is about 500.1748042132.

It can be divided in two parts, 1251 and 31149, that added together give a square (32400 = 180²).

The spelling of 125131149 in words is "one hundred twenty-five million, one hundred thirty-one thousand, one hundred forty-nine".