125369945 has 8 divisors (see below), whose sum is σ = 152910600. Its totient is φ = 98651520.

The previous prime is 125369927. The next prime is 125369953. The reversal of 125369945 is 549963521.

It can be written as a sum of positive squares in 4 ways, for example, as 4897369 + 120472576 = 2213^2 + 10976^2 .

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

It is not a de Polignac number, because 125369945 - 2¹⁶ = 125304409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125369896 and 125369905.

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, 205220 + ... + 205829.

It is an arithmetic number, because the mean of its divisors is an integer number (19113825).

Almost surely, 2^125369945 is an apocalyptic number.

It is an amenable number.

125369945 is a deficient number, since it is larger than the sum of its proper divisors (27540655).

125369945 is an equidigital number, since it uses as much as digits as its factorization.

125369945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411115.

The product of its digits is 291600, while the sum is 44.

The square root of 125369945 is about 11196.8721078701. The cubic root of 125369945 is about 500.4927741877.

The spelling of 125369945 in words is "one hundred twenty-five million, three hundred sixty-nine thousand, nine hundred forty-five".