25540510532015 has 8 divisors (see below), whose sum is σ = 30648679427808. Its totient is φ = 20432363899360.

The previous prime is 25540510531981. The next prime is 25540510532039. The reversal of 25540510532015 is 51023501504552.

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

It is not a de Polignac number, because 25540510532015 - 2¹⁶ = 25540510466479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25540510532015.

It is a congruent number.

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, 2928296 + ... + 7723725.

It is an arithmetic number, because the mean of its divisors is an integer number (3831084928476).

Almost surely, 2^{25540510532015} is an apocalyptic number.

25540510532015 is a deficient number, since it is larger than the sum of its proper divisors (5108168895793).

25540510532015 is a wasteful number, since it uses less digits than its factorization.

25540510532015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131569.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 25540510532015 in words is "twenty-five trillion, five hundred forty billion, five hundred ten million, five hundred thirty-two thousand, fifteen".