125454515353 has 4 divisors (see below), whose sum is σ = 125767369908. Its totient is φ = 125141660800.

The previous prime is 125454515299. The next prime is 125454515371. The reversal of 125454515353 is 353515454521.

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 119043630729 + 6410884624 = 345027^2 + 80068^2 .

It is a cyclic number.

It is not a de Polignac number, because 125454515353 - 2²⁵ = 125420960921 is a prime.

It is a super-2 number, since 2×125454515353² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125454515653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156426676 + ... + 156427477.

It is an arithmetic number, because the mean of its divisors is an integer number (31441842477).

Almost surely, 2^125454515353 is an apocalyptic number.

It is an amenable number.

125454515353 is a deficient number, since it is larger than the sum of its proper divisors (312854555).

125454515353 is an equidigital number, since it uses as much as digits as its factorization.

125454515353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312854554.

The product of its digits is 900000, while the sum is 43.

Adding to 125454515353 its reverse (353515454521), we get a palindrome (478969969874).

The spelling of 125454515353 in words is "one hundred twenty-five billion, four hundred fifty-four million, five hundred fifteen thousand, three hundred fifty-three".