125143551 has 12 divisors (see below), whose sum is σ = 194667928. Its totient is φ = 77011344.

The previous prime is 125143541. The next prime is 125143561. The reversal of 125143551 is 155341521.

It is an interprime number because it is at equal distance from previous prime (125143541) and next prime (125143561).

It is not a de Polignac number, because 125143551 - 2⁷ = 125143423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125143541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 534685 + ... + 534918.

Almost surely, 2^125143551 is an apocalyptic number.

125143551 is a deficient number, since it is larger than the sum of its proper divisors (69524377).

125143551 is a wasteful number, since it uses less digits than its factorization.

125143551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069622 (or 1069619 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 125143551 is about 11186.7578413050. The cubic root of 125143551 is about 500.1913281111.

The spelling of 125143551 in words is "one hundred twenty-five million, one hundred forty-three thousand, five hundred fifty-one".