25121505271 has 2 divisors, whose sum is σ = 25121505272. Its totient is φ = 25121505270.

The previous prime is 25121505259. The next prime is 25121505293. The reversal of 25121505271 is 17250512152.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25121505271 - 2¹¹ = 25121503223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25121505571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560752635 + 12560752636.

It is an arithmetic number, because the mean of its divisors is an integer number (12560752636).

Almost surely, 2^25121505271 is an apocalyptic number.

25121505271 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121505271 is an equidigital number, since it uses as much as digits as its factorization.

25121505271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7000, while the sum is 31.

The spelling of 25121505271 in words is "twenty-five billion, one hundred twenty-one million, five hundred five thousand, two hundred seventy-one".