125425042550 has 12 divisors (see below), whose sum is σ = 233290579236. Its totient is φ = 50170017000.

The previous prime is 125425042531. The next prime is 125425042573. The reversal of 125425042550 is 55240524521.

It is a self number, because there is not a number n which added to its sum of digits gives 125425042550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1254250376 + ... + 1254250475.

It is an arithmetic number, because the mean of its divisors is an integer number (19440881603).

Almost surely, 2^125425042550 is an apocalyptic number.

125425042550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125425042550 is a deficient number, since it is larger than the sum of its proper divisors (107865536686).

125425042550 is a wasteful number, since it uses less digits than its factorization.

125425042550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508500863 (or 2508500858 counting only the distinct ones).

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

The spelling of 125425042550 in words is "one hundred twenty-five billion, four hundred twenty-five million, forty-two thousand, five hundred fifty".