125782913 has 4 divisors (see below), whose sum is σ = 125884080. Its totient is φ = 125681748.

The previous prime is 125782901. The next prime is 125782933. The reversal of 125782913 is 319287521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125782913 - 2¹² = 125778817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125782933) 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, 48695 + ... + 51212.

It is an arithmetic number, because the mean of its divisors is an integer number (31471020).

Almost surely, 2^125782913 is an apocalyptic number.

It is an amenable number.

125782913 is a deficient number, since it is larger than the sum of its proper divisors (101167).

125782913 is an equidigital number, since it uses as much as digits as its factorization.

125782913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101166.

The product of its digits is 30240, while the sum is 38.

The square root of 125782913 is about 11215.2981681273. The cubic root of 125782913 is about 501.0417121643.

The spelling of 125782913 in words is "one hundred twenty-five million, seven hundred eighty-two thousand, nine hundred thirteen".