125574761828 has 6 divisors (see below), whose sum is σ = 219755833206. Its totient is φ = 62787380912.

The previous prime is 125574761749. The next prime is 125574761831. The reversal of 125574761828 is 828167475521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 125572427044 + 2334784 = 354362^2 + 1528^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15696845225 + ... + 15696845232.

It is an arithmetic number, because the mean of its divisors is an integer number (36625972201).

Almost surely, 2^125574761828 is an apocalyptic number.

It is an amenable number.

125574761828 is a deficient number, since it is larger than the sum of its proper divisors (94181071378).

125574761828 is a wasteful number, since it uses less digits than its factorization.

125574761828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31393690461 (or 31393690459 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 56.

The spelling of 125574761828 in words is "one hundred twenty-five billion, five hundred seventy-four million, seven hundred sixty-one thousand, eight hundred twenty-eight".