125006251250 has 20 divisors (see below), whose sum is σ = 234311719686. Its totient is φ = 50002500000.

The previous prime is 125006251241. The next prime is 125006251261. The reversal of 125006251250 is 52152600521.

It can be written as a sum of positive squares in 5 ways, for example, as 25558736641 + 99447514609 = 159871^2 + 315353^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50001251 + ... + 50003750.

Almost surely, 2^125006251250 is an apocalyptic number.

125006251250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125006251250 is a deficient number, since it is larger than the sum of its proper divisors (109305468436).

125006251250 is an equidigital number, since it uses as much as digits as its factorization.

125006251250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100005023 (or 100005008 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 125006251250 its reverse (52152600521), we get a palindrome (177158851771).

The spelling of 125006251250 in words is "one hundred twenty-five billion, six million, two hundred fifty-one thousand, two hundred fifty".