125504250646 has 4 divisors (see below), whose sum is σ = 188256375972. Its totient is φ = 62752125322.

The previous prime is 125504250631. The next prime is 125504250647. The reversal of 125504250646 is 646052405521.

It is a happy number.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 125504250599 and 125504250608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125504250647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31376062660 + ... + 31376062663.

It is an arithmetic number, because the mean of its divisors is an integer number (47064093993).

Almost surely, 2^125504250646 is an apocalyptic number.

125504250646 is a deficient number, since it is larger than the sum of its proper divisors (62752125326).

125504250646 is an equidigital number, since it uses as much as digits as its factorization.

125504250646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62752125325.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 125504250646 in words is "one hundred twenty-five billion, five hundred four million, two hundred fifty thousand, six hundred forty-six".