125239917450 has 48 divisors (see below), whose sum is σ = 311302664640. Its totient is φ = 33321217920.

The previous prime is 125239917437. The next prime is 125239917529. The reversal of 125239917450 is 54719932521.

It is a self number, because there is not a number n which added to its sum of digits gives 125239917450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 885099 + ... + 1016798.

It is an arithmetic number, because the mean of its divisors is an integer number (6485472180).

Almost surely, 2^125239917450 is an apocalyptic number.

125239917450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125239917450 is an abundant number, since it is smaller than the sum of its proper divisors (186062747190).

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

125239917450 is a wasteful number, since it uses less digits than its factorization.

125239917450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902351 (or 1902346 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 125239917450 in words is "one hundred twenty-five billion, two hundred thirty-nine million, nine hundred seventeen thousand, four hundred fifty".