125784807990 has 32 divisors (see below), whose sum is σ = 301930302816. Its totient is φ = 33537419520.

The previous prime is 125784807983. The next prime is 125784808033. The reversal of 125784807990 is 99708487521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125857 + ... + 517116.

It is an arithmetic number, because the mean of its divisors is an integer number (9435321963).

Almost surely, 2^125784807990 is an apocalyptic number.

125784807990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125784807990 is an abundant number, since it is smaller than the sum of its proper divisors (176145494826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125784807990 is a wasteful number, since it uses less digits than its factorization.

125784807990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649504.

The product of its (nonzero) digits is 10160640, while the sum is 60.

The spelling of 125784807990 in words is "one hundred twenty-five billion, seven hundred eighty-four million, eight hundred seven thousand, nine hundred ninety".