25105452015 has 64 divisors (see below), whose sum is σ = 48659733504. Its totient is φ = 10790074368.

The previous prime is 25105451957. The next prime is 25105452017. The reversal of 25105452015 is 51025450152.

It is not a de Polignac number, because 25105452015 - 2²⁰ = 25104403439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105452017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1772592 + ... + 1786698.

It is an arithmetic number, because the mean of its divisors is an integer number (760308336).

Almost surely, 2^25105452015 is an apocalyptic number.

25105452015 is a deficient number, since it is larger than the sum of its proper divisors (23554281489).

25105452015 is a wasteful number, since it uses less digits than its factorization.

25105452015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15136.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 25105452015 in words is "twenty-five billion, one hundred five million, four hundred fifty-two thousand, fifteen".