125285557850 has 48 divisors (see below), whose sum is σ = 245615272920. Its totient is φ = 47473171200.

The previous prime is 125285557847. The next prime is 125285557861. The reversal of 125285557850 is 58755582521.

It is a Cunningham number, because it is equal to 353957²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 7860772921 + 117424784929 = 88661^2 + 342673^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 125285557792 and 125285557801.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 738281 + ... + 891980.

Almost surely, 2^125285557850 is an apocalyptic number.

125285557850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125285557850 is a deficient number, since it is larger than the sum of its proper divisors (120329715070).

125285557850 is a wasteful number, since it uses less digits than its factorization.

125285557850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630355 (or 1630350 counting only the distinct ones).

The product of its (nonzero) digits is 5600000, while the sum is 53.

The spelling of 125285557850 in words is "one hundred twenty-five billion, two hundred eighty-five million, five hundred fifty-seven thousand, eight hundred fifty".