25115450445 has 12 divisors (see below), whose sum is σ = 43533447516. Its totient is φ = 13394906880.

The previous prime is 25115450431. The next prime is 25115450593. The reversal of 25115450445 is 54405451152.

25115450445 is a `hidden beast` number, since 2 + 511 + 54 + 50 + 4 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14661819396 + 10453631049 = 121086^2 + 102243^2 .

It is not a de Polignac number, because 25115450445 - 2⁷ = 25115450317 is a prime.

It is a congruent number.

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, 279060516 + ... + 279060605.

It is an arithmetic number, because the mean of its divisors is an integer number (3627787293).

Almost surely, 2^25115450445 is an apocalyptic number.

It is an amenable number.

25115450445 is a deficient number, since it is larger than the sum of its proper divisors (18417997071).

25115450445 is a wasteful number, since it uses less digits than its factorization.

25115450445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558121132 (or 558121129 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 25115450445 in words is "twenty-five billion, one hundred fifteen million, four hundred fifty thousand, four hundred forty-five".