125124613551 has 12 divisors (see below), whose sum is σ = 206554917712. Its totient is φ = 71499779136.

The previous prime is 125124613541. The next prime is 125124613573. The reversal of 125124613551 is 155316421521.

125124613551 is a `hidden beast` number, since 1 + 2 + 51 + 2 + 46 + 13 + 551 = 666.

It is not a de Polignac number, because 125124613551 - 2¹⁰ = 125124612527 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 (125124613531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 993052426 + ... + 993052551.

Almost surely, 2^125124613551 is an apocalyptic number.

125124613551 is a deficient number, since it is larger than the sum of its proper divisors (81430304161).

125124613551 is a wasteful number, since it uses less digits than its factorization.

125124613551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986104990 (or 1986104987 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The spelling of 125124613551 in words is "one hundred twenty-five billion, one hundred twenty-four million, six hundred thirteen thousand, five hundred fifty-one".