125601251 has 4 divisors (see below), whose sum is σ = 125872992. Its totient is φ = 125329512.

The previous prime is 125601241. The next prime is 125601293. The reversal of 125601251 is 152106521.

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 125601251 - 2¹⁰ = 125600227 is a prime.

It is a super-3 number, since 3×125601251³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125601221) 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, 135176 + ... + 136101.

It is an arithmetic number, because the mean of its divisors is an integer number (31468248).

Almost surely, 2^125601251 is an apocalyptic number.

125601251 is a deficient number, since it is larger than the sum of its proper divisors (271741).

125601251 is an equidigital number, since it uses as much as digits as its factorization.

125601251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271740.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 125601251 is about 11207.1963933894. The cubic root of 125601251 is about 500.8003860806.

Adding to 125601251 its reverse (152106521), we get a palindrome (277707772).

The spelling of 125601251 in words is "one hundred twenty-five million, six hundred one thousand, two hundred fifty-one".