125134551 has 24 divisors (see below), whose sum is σ = 197317120. Its totient is φ = 79029432.

The previous prime is 125134523. The next prime is 125134553. The reversal of 125134551 is 155431521.

It is not a de Polignac number, because 125134551 - 2⁶ = 125134487 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125134553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8935 + ... + 18168.

Almost surely, 2^125134551 is an apocalyptic number.

125134551 is a deficient number, since it is larger than the sum of its proper divisors (72182569).

125134551 is an equidigital number, since it uses as much as digits as its factorization.

125134551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27137 (or 27125 counting only the distinct ones).

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

The square root of 125134551 is about 11186.3555727502. The cubic root of 125134551 is about 500.1793370021.

The spelling of 125134551 in words is "one hundred twenty-five million, one hundred thirty-four thousand, five hundred fifty-one".