2115403525 has 6 divisors (see below), whose sum is σ = 2623100402. Its totient is φ = 1692322800.

The previous prime is 2115403519. The next prime is 2115403571. The reversal of 2115403525 is 5253045112.

It can be written as a sum of positive squares in 3 ways, for example, as 21242881 + 2094160644 = 4609^2 + 45762^2 .

It is not a de Polignac number, because 2115403525 - 2⁷ = 2115403397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2115403493 and 2115403502.

It is a congruent 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, 42308046 + ... + 42308095.

Almost surely, 2^2115403525 is an apocalyptic number.

2115403525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2115403525 is a deficient number, since it is larger than the sum of its proper divisors (507696877).

2115403525 is an equidigital number, since it uses as much as digits as its factorization.

2115403525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84616151 (or 84616146 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2115403525 is about 45993.5161191227. The cubic root of 2115403525 is about 1283.7025618123.

Adding to 2115403525 its reverse (5253045112), we get a palindrome (7368448637).

The spelling of 2115403525 in words is "two billion, one hundred fifteen million, four hundred three thousand, five hundred twenty-five".