25545355616015 has 16 divisors (see below), whose sum is σ = 31197592553760. Its totient is φ = 20074698378240.

The previous prime is 25545355615993. The next prime is 25545355616047. The reversal of 25545355616015 is 51061655354552.

It is not a de Polignac number, because 25545355616015 - 2⁴⁰ = 24445843988239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32386394 + ... + 33165783.

It is an arithmetic number, because the mean of its divisors is an integer number (1949849534610).

Almost surely, 2^{25545355616015} is an apocalyptic number.

25545355616015 is a deficient number, since it is larger than the sum of its proper divisors (5652236937745).

25545355616015 is a wasteful number, since it uses less digits than its factorization.

25545355616015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65553562.

The product of its (nonzero) digits is 13500000, while the sum is 53.

The spelling of 25545355616015 in words is "twenty-five trillion, five hundred forty-five billion, three hundred fifty-five million, six hundred sixteen thousand, fifteen".