125750553 has 4 divisors (see below), whose sum is σ = 167667408. Its totient is φ = 83833700.

The previous prime is 125750549. The next prime is 125750579. The reversal of 125750553 is 355057521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125750553 - 2² = 125750549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125750593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20958423 + ... + 20958428.

It is an arithmetic number, because the mean of its divisors is an integer number (41916852).

Almost surely, 2^125750553 is an apocalyptic number.

It is an amenable number.

125750553 is a deficient number, since it is larger than the sum of its proper divisors (41916855).

125750553 is an equidigital number, since it uses as much as digits as its factorization.

125750553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41916854.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 125750553 is about 11213.8554030271. The cubic root of 125750553 is about 500.9987410377.

The spelling of 125750553 in words is "one hundred twenty-five million, seven hundred fifty thousand, five hundred fifty-three".