125404245 has 24 divisors (see below), whose sum is σ = 219088896. Its totient is φ = 66352608.

The previous prime is 125404241. The next prime is 125404277. The reversal of 125404245 is 542404521.

125404245 is a `hidden beast` number, since 12 + 5 + 404 + 245 = 666.

It is not a de Polignac number, because 125404245 - 2² = 125404241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5257 + ... + 16686.

It is an arithmetic number, because the mean of its divisors is an integer number (9128704).

Almost surely, 2^125404245 is an apocalyptic number.

125404245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125404245 is a deficient number, since it is larger than the sum of its proper divisors (93684651).

125404245 is a wasteful number, since it uses less digits than its factorization.

125404245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22081 (or 22078 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 125404245 is about 11198.4036808824. The cubic root of 125404245 is about 500.5384133474.

Adding to 125404245 its reverse (542404521), we get a palindrome (667808766).

The spelling of 125404245 in words is "one hundred twenty-five million, four hundred four thousand, two hundred forty-five".