15530500025 has 12 divisors (see below), whose sum is σ = 20390633532. Its totient is φ = 11693552640.

The previous prime is 15530500019. The next prime is 15530500031. The reversal of 15530500025 is 52000503551.

It is an interprime number because it is at equal distance from previous prime (15530500019) and next prime (15530500031).

It can be written as a sum of positive squares in 6 ways, for example, as 1140818176 + 14389681849 = 33776^2 + 119957^2 .

It is not a de Polignac number, because 15530500025 - 2¹⁶ = 15530434489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15530499967 and 15530500003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18270752 + ... + 18271601.

It is an arithmetic number, because the mean of its divisors is an integer number (1699219461).

Almost surely, 2^15530500025 is an apocalyptic number.

It is an amenable number.

15530500025 is a deficient number, since it is larger than the sum of its proper divisors (4860133507).

15530500025 is a wasteful number, since it uses less digits than its factorization.

15530500025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36542380 (or 36542375 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The spelling of 15530500025 in words is "fifteen billion, five hundred thirty million, five hundred thousand, twenty-five".