125133553 has 4 divisors (see below), whose sum is σ = 125930740. Its totient is φ = 124336368.

The previous prime is 125133527. The next prime is 125133581. The reversal of 125133553 is 355331521.

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 59474944 + 65658609 = 7712^2 + 8103^2 .

It is a cyclic number.

It is not a de Polignac number, because 125133553 - 2¹³ = 125125361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125133653) 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, 398358 + ... + 398671.

It is an arithmetic number, because the mean of its divisors is an integer number (31482685).

Almost surely, 2^125133553 is an apocalyptic number.

It is an amenable number.

125133553 is a deficient number, since it is larger than the sum of its proper divisors (797187).

125133553 is an equidigital number, since it uses as much as digits as its factorization.

125133553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797186.

The product of its digits is 6750, while the sum is 28.

The square root of 125133553 is about 11186.3109647462. The cubic root of 125133553 is about 500.1780072860.

The spelling of 125133553 in words is "one hundred twenty-five million, one hundred thirty-three thousand, five hundred fifty-three".