125990393759 has 4 divisors (see below), whose sum is σ = 126039248760. Its totient is φ = 125941538760.

The previous prime is 125990393743. The next prime is 125990393791. The reversal of 125990393759 is 957393099521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125990393759 - 2⁴ = 125990393743 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 (125990393059) 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, 24423632 + ... + 24428789.

It is an arithmetic number, because the mean of its divisors is an integer number (31509812190).

Almost surely, 2^125990393759 is an apocalyptic number.

125990393759 is a deficient number, since it is larger than the sum of its proper divisors (48855001).

125990393759 is an equidigital number, since it uses as much as digits as its factorization.

125990393759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48855000.

The product of its (nonzero) digits is 20667150, while the sum is 62.

The spelling of 125990393759 in words is "one hundred twenty-five billion, nine hundred ninety million, three hundred ninety-three thousand, seven hundred fifty-nine".