125540378765 has 8 divisors (see below), whose sum is σ = 151550542080. Its totient is φ = 99830911312.

The previous prime is 125540378753. The next prime is 125540378767. The reversal of 125540378765 is 567873045521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125540378765 - 2¹⁰ = 125540377741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125540378767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75173045 + ... + 75174714.

It is an arithmetic number, because the mean of its divisors is an integer number (18943817760).

Almost surely, 2^125540378765 is an apocalyptic number.

It is an amenable number.

125540378765 is a deficient number, since it is larger than the sum of its proper divisors (26010163315).

125540378765 is a wasteful number, since it uses less digits than its factorization.

125540378765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150347931.

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 125540378765 in words is "one hundred twenty-five billion, five hundred forty million, three hundred seventy-eight thousand, seven hundred sixty-five".