125664210145 has 8 divisors (see below), whose sum is σ = 150803588520. Its totient is φ = 100527010560.

The previous prime is 125664210109. The next prime is 125664210151. The reversal of 125664210145 is 541012466521.

It can be written as a sum of positive squares in 4 ways, for example, as 29386187776 + 96278022369 = 171424^2 + 310287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125664210145 - 2¹³ = 125664201953 is a prime.

It is a super-2 number, since 2×125664210145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415000 + ... + 650809.

It is an arithmetic number, because the mean of its divisors is an integer number (18850448565).

Almost surely, 2^125664210145 is an apocalyptic number.

It is an amenable number.

125664210145 is a deficient number, since it is larger than the sum of its proper divisors (25139378375).

125664210145 is a wasteful number, since it uses less digits than its factorization.

125664210145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089395.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 125664210145 its reverse (541012466521), we get a palindrome (666676676666).

The spelling of 125664210145 in words is "one hundred twenty-five billion, six hundred sixty-four million, two hundred ten thousand, one hundred forty-five".