125311011253 has 4 divisors (see below), whose sum is σ = 127365290188. Its totient is φ = 123256732320.

The previous prime is 125311011223. The next prime is 125311011323. The reversal of 125311011253 is 352110113521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16636614289 + 108674396964 = 128983^2 + 329658^2 .

It is a cyclic number.

It is not a de Polignac number, because 125311011253 - 2¹⁷ = 125310880181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125311011223) 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, 1027139376 + ... + 1027139497.

It is an arithmetic number, because the mean of its divisors is an integer number (31841322547).

Almost surely, 2^125311011253 is an apocalyptic number.

It is an amenable number.

125311011253 is a deficient number, since it is larger than the sum of its proper divisors (2054278935).

125311011253 is an equidigital number, since it uses as much as digits as its factorization.

125311011253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054278934.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 125311011253 its reverse (352110113521), we get a palindrome (477421124774).

The spelling of 125311011253 in words is "one hundred twenty-five billion, three hundred eleven million, eleven thousand, two hundred fifty-three".