125723745 has 80 divisors (see below), whose sum is σ = 262149888. Its totient is φ = 56453760.

The previous prime is 125723683. The next prime is 125723783. The reversal of 125723745 is 547327521.

125723745 is a `hidden beast` number, since 12 + 572 + 3 + 74 + 5 = 666.

It is not a de Polignac number, because 125723745 - 2⁷ = 125723617 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 172572 + ... + 173298.

Almost surely, 2^125723745 is an apocalyptic number.

125723745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125723745 is an abundant number, since it is smaller than the sum of its proper divisors (136426143).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125723745 is an equidigital number, since it uses as much as digits as its factorization.

125723745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 803 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 125723745 is about 11212.6600323028. The cubic root of 125723745 is about 500.9631368768.

The spelling of 125723745 in words is "one hundred twenty-five million, seven hundred twenty-three thousand, seven hundred forty-five".