125242621735 has 16 divisors (see below), whose sum is σ = 187375974912. Its totient is φ = 78073322400.

The previous prime is 125242621733. The next prime is 125242621787. The reversal of 125242621735 is 537126242521.

It is not a de Polignac number, because 125242621735 - 2¹ = 125242621733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125242621733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162652371 + ... + 162653140.

It is an arithmetic number, because the mean of its divisors is an integer number (11710998432).

Almost surely, 2^125242621735 is an apocalyptic number.

125242621735 is a deficient number, since it is larger than the sum of its proper divisors (62133353177).

125242621735 is a wasteful number, since it uses less digits than its factorization.

125242621735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325305534.

The product of its digits is 201600, while the sum is 40.

The spelling of 125242621735 in words is "one hundred twenty-five billion, two hundred forty-two million, six hundred twenty-one thousand, seven hundred thirty-five".