125780645 has 8 divisors (see below), whose sum is σ = 151047456. Its totient is φ = 100550736.

The previous prime is 125780621. The next prime is 125780651. The reversal of 125780645 is 546087521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125780645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125780599 and 125780608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (18880932).

Almost surely, 2^125780645 is an apocalyptic number.

It is an amenable number.

125780645 is a deficient number, since it is larger than the sum of its proper divisors (25266811).

125780645 is a wasteful number, since it uses less digits than its factorization.

125780645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 125780645 is about 11215.1970557811. The cubic root of 125780645 is about 501.0387007075.

The spelling of 125780645 in words is "one hundred twenty-five million, seven hundred eighty thousand, six hundred forty-five".