1401515015125 has 16 divisors (see below), whose sum is σ = 1749191346864. Its totient is φ = 1121147520000.

The previous prime is 1401515015119. The next prime is 1401515015161. The reversal of 1401515015125 is 5215105151041.

It can be written as a sum of positive squares in 8 ways, for example, as 221480360689 + 1180034654436 = 470617^2 + 1086294^2 .

It is not a de Polignac number, because 1401515015125 - 2¹¹ = 1401515013077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1921605 + ... + 2548645.

It is an arithmetic number, because the mean of its divisors is an integer number (109324459179).

Almost surely, 2^{1401515015125} is an apocalyptic number.

It is an amenable number.

1401515015125 is a deficient number, since it is larger than the sum of its proper divisors (347676331739).

1401515015125 is an equidigital number, since it uses as much as digits as its factorization.

1401515015125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644937 (or 644927 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 31.

The spelling of 1401515015125 in words is "one trillion, four hundred one billion, five hundred fifteen million, fifteen thousand, one hundred twenty-five".