125783407 has 4 divisors (see below), whose sum is σ = 125949456. Its totient is φ = 125617360.

The previous prime is 125783393. The next prime is 125783417. The reversal of 125783407 is 704387521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704387521 = 71 ⋅9920951.

It is a cyclic number.

It is not a de Polignac number, because 125783407 - 2¹⁹ = 125259119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125783417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81883 + ... + 83404.

It is an arithmetic number, because the mean of its divisors is an integer number (31487364).

Almost surely, 2^125783407 is an apocalyptic number.

125783407 is a deficient number, since it is larger than the sum of its proper divisors (166049).

125783407 is an equidigital number, since it uses as much as digits as its factorization.

125783407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166048.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 125783407 is about 11215.3201915951. The cubic root of 125783407 is about 501.0423680941.

The spelling of 125783407 in words is "one hundred twenty-five million, seven hundred eighty-three thousand, four hundred seven".