125402905 has 8 divisors (see below), whose sum is σ = 155337984. Its totient is φ = 97086000.

The previous prime is 125402891. The next prime is 125402917. The reversal of 125402905 is 509204521.

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

It is not a de Polignac number, because 125402905 - 2²¹ = 123305753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404371 + ... + 404680.

It is an arithmetic number, because the mean of its divisors is an integer number (19417248).

Almost surely, 2^125402905 is an apocalyptic number.

It is an amenable number.

125402905 is a deficient number, since it is larger than the sum of its proper divisors (29935079).

125402905 is an equidigital number, since it uses as much as digits as its factorization.

125402905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809087.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125402905 is about 11198.3438507665. The cubic root of 125402905 is about 500.5366305160.

The spelling of 125402905 in words is "one hundred twenty-five million, four hundred two thousand, nine hundred five".