15135310125025 has 6 divisors (see below), whose sum is σ = 18767784555062. Its totient is φ = 12108248100000.

The previous prime is 15135310124989. The next prime is 15135310125059. The reversal of 15135310125025 is 52052101353151.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 130153549824 + 15005156575201 = 360768^2 + 3873649^2 .

It is not a de Polignac number, because 15135310125025 - 2¹⁵ = 15135310092257 is a prime.

It is a super-2 number, since 2×15135310125025² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302706202476 + ... + 302706202525.

Almost surely, 2^{15135310125025} is an apocalyptic number.

It is an amenable number.

15135310125025 is a deficient number, since it is larger than the sum of its proper divisors (3632474430037).

15135310125025 is an equidigital number, since it uses as much as digits as its factorization.

15135310125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605412405011 (or 605412405006 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

Adding to 15135310125025 its reverse (52052101353151), we get a palindrome (67187411478176).

The spelling of 15135310125025 in words is "fifteen trillion, one hundred thirty-five billion, three hundred ten million, one hundred twenty-five thousand, twenty-five".