125138887641 has 24 divisors (see below), whose sum is σ = 186702374144. Its totient is φ = 80684851680.

The previous prime is 125138887639. The next prime is 125138887651. The reversal of 125138887641 is 146788831521.

125138887641 is a `hidden beast` number, since 1 + 2 + 513 + 8 + 8 + 87 + 6 + 41 = 666.

It is not a de Polignac number, because 125138887641 - 2¹ = 125138887639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125138887651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316095 + ... + 591771.

Almost surely, 2^125138887641 is an apocalyptic number.

It is an amenable number.

125138887641 is a deficient number, since it is larger than the sum of its proper divisors (61563486503).

125138887641 is a wasteful number, since it uses less digits than its factorization.

125138887641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277341 (or 277338 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 125138887641 in words is "one hundred twenty-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, six hundred forty-one".