125424405 has 48 divisors (see below), whose sum is σ = 228458880. Its totient is φ = 63533184.

The previous prime is 125424389. The next prime is 125424443. The reversal of 125424405 is 504424521.

125424405 is a `hidden beast` number, since 1 + 254 + 2 + 4 + 405 = 666.

It is not a de Polignac number, because 125424405 - 2⁴ = 125424389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184927 + ... + 185603.

It is an arithmetic number, because the mean of its divisors is an integer number (4759560).

Almost surely, 2^125424405 is an apocalyptic number.

125424405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125424405 is a deficient number, since it is larger than the sum of its proper divisors (103034475).

125424405 is a wasteful number, since it uses less digits than its factorization.

125424405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 887 counting only the distinct ones).

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

The square root of 125424405 is about 11199.3037730030. The cubic root of 125424405 is about 500.5652341133.

Adding to 125424405 its reverse (504424521), we get a palindrome (629848926).

The spelling of 125424405 in words is "one hundred twenty-five million, four hundred twenty-four thousand, four hundred five".