125864572738 has 4 divisors (see below), whose sum is σ = 188796859110. Its totient is φ = 62932286368.

The previous prime is 125864572699. The next prime is 125864572753. The reversal of 125864572738 is 837275468521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837275468521 = 238939 ⋅3504139.

It can be written as a sum of positive squares in only one way, i.e., 123915968289 + 1948604449 = 352017^2 + 44143^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31466143183 + ... + 31466143186.

Almost surely, 2^125864572738 is an apocalyptic number.

125864572738 is a deficient number, since it is larger than the sum of its proper divisors (62932286372).

125864572738 is an equidigital number, since it uses as much as digits as its factorization.

125864572738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62932286371.

The product of its digits is 22579200, while the sum is 58.

The spelling of 125864572738 in words is "one hundred twenty-five billion, eight hundred sixty-four million, five hundred seventy-two thousand, seven hundred thirty-eight".