125550251838 has 48 divisors (see below), whose sum is σ = 303069102336. Its totient is φ = 37236048720.

The previous prime is 125550251833. The next prime is 125550251851. The reversal of 125550251838 is 838152055521.

125550251838 is a `hidden beast` number, since 1 + 2 + 55 + 50 + 2 + 518 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 125550251793 and 125550251802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125550251833) 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, 6736356 + ... + 6754967.

It is an arithmetic number, because the mean of its divisors is an integer number (6313939632).

Almost surely, 2^125550251838 is an apocalyptic number.

125550251838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125550251838 is an abundant number, since it is smaller than the sum of its proper divisors (177518850498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125550251838 is a wasteful number, since it uses less digits than its factorization.

125550251838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491389 (or 13491386 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 45.

The spelling of 125550251838 in words is "one hundred twenty-five billion, five hundred fifty million, two hundred fifty-one thousand, eight hundred thirty-eight".