125051023551 has 8 divisors (see below), whose sum is σ = 167368671360. Its totient is φ = 83050362392.

The previous prime is 125051023549. The next prime is 125051023553. The reversal of 125051023551 is 155320150521.

It is an interprime number because it is at equal distance from previous prime (125051023549) and next prime (125051023553).

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 125051023551 - 2¹ = 125051023549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125051023553) 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, 79245741 + ... + 79247318.

It is an arithmetic number, because the mean of its divisors is an integer number (20921083920).

Almost surely, 2^125051023551 is an apocalyptic number.

125051023551 is a deficient number, since it is larger than the sum of its proper divisors (42317647809).

125051023551 is a wasteful number, since it uses less digits than its factorization.

125051023551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158493325.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 125051023551 in words is "one hundred twenty-five billion, fifty-one million, twenty-three thousand, five hundred fifty-one".