125252525250 has 96 divisors (see below), whose sum is σ = 339143186304. Its totient is φ = 33355274400.

The previous prime is 125252525221. The next prime is 125252525273. The reversal of 125252525250 is 52525252521.

125252525250 is a `hidden beast` number, since 12 + 52 + 52 + 525 + 25 + 0 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1634289 + ... + 1709211.

It is an arithmetic number, because the mean of its divisors is an integer number (3532741524).

Almost surely, 2^125252525250 is an apocalyptic number.

125252525250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125252525250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169571593152).

125252525250 is an abundant number, since it is smaller than the sum of its proper divisors (213890661054).

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

125252525250 is a wasteful number, since it uses less digits than its factorization.

125252525250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75689 (or 75676 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

Adding to 125252525250 its reverse (52525252521), we get a palindrome (177777777771).

The spelling of 125252525250 in words is "one hundred twenty-five billion, two hundred fifty-two million, five hundred twenty-five thousand, two hundred fifty".