125021442351 has 16 divisors (see below), whose sum is σ = 185708244960. Its totient is φ = 74283296640.

The previous prime is 125021442349. The next prime is 125021442379. The reversal of 125021442351 is 153244120521.

It is not a de Polignac number, because 125021442351 - 2¹ = 125021442349 is a prime.

It is a super-2 number, since 2×125021442351² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125021442331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55269180 + ... + 55271441.

It is an arithmetic number, because the mean of its divisors is an integer number (11606765310).

Almost surely, 2^125021442351 is an apocalyptic number.

125021442351 is a deficient number, since it is larger than the sum of its proper divisors (60686802609).

125021442351 is a wasteful number, since it uses less digits than its factorization.

125021442351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110540666.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 125021442351 its reverse (153244120521), we get a palindrome (278265562872).

The spelling of 125021442351 in words is "one hundred twenty-five billion, twenty-one million, four hundred forty-two thousand, three hundred fifty-one".