125501232251 has 4 divisors (see below), whose sum is σ = 125989564152. Its totient is φ = 125012900352.

The previous prime is 125501232229. The next prime is 125501232253. The reversal of 125501232251 is 152232105521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125501232251 - 2⁶ = 125501232187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125501232253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244165565 + ... + 244166078.

It is an arithmetic number, because the mean of its divisors is an integer number (31497391038).

Almost surely, 2^125501232251 is an apocalyptic number.

125501232251 is a deficient number, since it is larger than the sum of its proper divisors (488331901).

125501232251 is an equidigital number, since it uses as much as digits as its factorization.

125501232251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488331900.

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

Adding to 125501232251 its reverse (152232105521), we get a palindrome (277733337772).

The spelling of 125501232251 in words is "one hundred twenty-five billion, five hundred one million, two hundred thirty-two thousand, two hundred fifty-one".