125353531 has 4 divisors (see below), whose sum is σ = 125384112. Its totient is φ = 125322952.

The previous prime is 125353453. The next prime is 125353567. The reversal of 125353531 is 135353521.

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

It is a cyclic number.

It is not a de Polignac number, because 125353531 - 2¹¹ = 125351483 is a prime.

It is a super-2 number, since 2×125353531² = 31427015468335922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125353531.

It is not an unprimeable number, because it can be changed into a prime (125353331) 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, 7975 + ... + 17728.

It is an arithmetic number, because the mean of its divisors is an integer number (31346028).

Almost surely, 2^125353531 is an apocalyptic number.

125353531 is a deficient number, since it is larger than the sum of its proper divisors (30581).

125353531 is an equidigital number, since it uses as much as digits as its factorization.

125353531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30580.

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

The square root of 125353531 is about 11196.1391113187. The cubic root of 125353531 is about 500.4709309754.

The spelling of 125353531 in words is "one hundred twenty-five million, three hundred fifty-three thousand, five hundred thirty-one".