25041440539 has 2 divisors, whose sum is σ = 25041440540. Its totient is φ = 25041440538.

The previous prime is 25041440449. The next prime is 25041440561. The reversal of 25041440539 is 93504414052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25041440539 - 2³³ = 16451505947 is a prime.

It is a super-2 number, since 2×25041440539² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25041440498 and 25041440507.

It is not a weakly prime, because it can be changed into another prime (25041440239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12520720269 + 12520720270.

It is an arithmetic number, because the mean of its divisors is an integer number (12520720270).

Almost surely, 2^25041440539 is an apocalyptic number.

25041440539 is a deficient number, since it is larger than the sum of its proper divisors (1).

25041440539 is an equidigital number, since it uses as much as digits as its factorization.

25041440539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 25041440539 in words is "twenty-five billion, forty-one million, four hundred forty thousand, five hundred thirty-nine".