125535553 has 8 divisors (see below), whose sum is σ = 147482496. Its totient is φ = 105344400.

The previous prime is 125535551. The next prime is 125535559. The reversal of 125535553 is 355535521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125535553 - 2¹ = 125535551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125535551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438793 + ... + 439078.

It is an arithmetic number, because the mean of its divisors is an integer number (18435312).

Almost surely, 2^125535553 is an apocalyptic number.

125535553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

125535553 is a deficient number, since it is larger than the sum of its proper divisors (21946943).

125535553 is a wasteful number, since it uses less digits than its factorization.

125535553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877895.

The product of its digits is 56250, while the sum is 34.

The square root of 125535553 is about 11204.2649468852. The cubic root of 125535553 is about 500.7130532933.

The spelling of 125535553 in words is "one hundred twenty-five million, five hundred thirty-five thousand, five hundred fifty-three".