125210135551 has 8 divisors (see below), whose sum is σ = 131119022304. Its totient is φ = 119339996160.

The previous prime is 125210135543. The next prime is 125210135587. The reversal of 125210135551 is 155531012521.

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 125210135551 - 2³ = 125210135543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125210135591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9680226 + ... + 9693151.

It is an arithmetic number, because the mean of its divisors is an integer number (16389877788).

Almost surely, 2^125210135551 is an apocalyptic number.

125210135551 is a deficient number, since it is larger than the sum of its proper divisors (5908886753).

125210135551 is a wasteful number, since it uses less digits than its factorization.

125210135551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19373681.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 125210135551 in words is "one hundred twenty-five billion, two hundred ten million, one hundred thirty-five thousand, five hundred fifty-one".