125205504542 has 4 divisors (see below), whose sum is σ = 187808256816. Its totient is φ = 62602752270.

The previous prime is 125205504503. The next prime is 125205504601. The reversal of 125205504542 is 245405502521.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31301376134 + ... + 31301376137.

It is an arithmetic number, because the mean of its divisors is an integer number (46952064204).

Almost surely, 2^125205504542 is an apocalyptic number.

125205504542 is a deficient number, since it is larger than the sum of its proper divisors (62602752274).

125205504542 is an equidigital number, since it uses as much as digits as its factorization.

125205504542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62602752273.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 125205504542 in words is "one hundred twenty-five billion, two hundred five million, five hundred four thousand, five hundred forty-two".