25127527525 has 12 divisors (see below), whose sum is σ = 31918089924. Its totient is φ = 19611728000.

The previous prime is 25127527511. The next prime is 25127527547. The reversal of 25127527525 is 52572572152.

It can be written as a sum of positive squares in 6 ways, for example, as 6917914276 + 18209613249 = 83174^2 + 134943^2 .

It is not a de Polignac number, because 25127527525 - 2⁹ = 25127527013 is a prime.

It is a Duffinian number.

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, 12256306 + ... + 12258355.

It is an arithmetic number, because the mean of its divisors is an integer number (2659840827).

Almost surely, 2^25127527525 is an apocalyptic number.

25127527525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25127527525 is a deficient number, since it is larger than the sum of its proper divisors (6790562399).

25127527525 is a wasteful number, since it uses less digits than its factorization.

25127527525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24514712 (or 24514707 counting only the distinct ones).

The product of its digits is 490000, while the sum is 43.

The spelling of 25127527525 in words is "twenty-five billion, one hundred twenty-seven million, five hundred twenty-seven thousand, five hundred twenty-five".