125351320251 has 16 divisors (see below), whose sum is σ = 173002291200. Its totient is φ = 80637412128.

The previous prime is 125351320243. The next prime is 125351320273. The reversal of 125351320251 is 152023153521.

It is not a de Polignac number, because 125351320251 - 2³ = 125351320243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125351320951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287131 + ... + 577188.

It is an arithmetic number, because the mean of its divisors is an integer number (10812643200).

Almost surely, 2^125351320251 is an apocalyptic number.

125351320251 is a deficient number, since it is larger than the sum of its proper divisors (47650970949).

125351320251 is a wasteful number, since it uses less digits than its factorization.

125351320251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866018.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 125351320251 its reverse (152023153521), we get a palindrome (277374473772).

The spelling of 125351320251 in words is "one hundred twenty-five billion, three hundred fifty-one million, three hundred twenty thousand, two hundred fifty-one".