125205491 has 8 divisors (see below), whose sum is σ = 130927104. Its totient is φ = 119507080.

The previous prime is 125205473. The next prime is 125205503. The reversal of 125205491 is 194502521.

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

It is not a de Polignac number, because 125205491 - 2²⁶ = 58096627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125205401) 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, 5750 + ... + 16836.

It is an arithmetic number, because the mean of its divisors is an integer number (16365888).

Almost surely, 2^125205491 is an apocalyptic number.

125205491 is a deficient number, since it is larger than the sum of its proper divisors (5721613).

125205491 is a wasteful number, since it uses less digits than its factorization.

125205491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11601.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 125205491 is about 11189.5259506379. The cubic root of 125205491 is about 500.2738379981.

The spelling of 125205491 in words is "one hundred twenty-five million, two hundred five thousand, four hundred ninety-one".