25031124407 has 2 divisors, whose sum is σ = 25031124408. Its totient is φ = 25031124406.

The previous prime is 25031124379. The next prime is 25031124427. The reversal of 25031124407 is 70442113052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25031124407 is a prime.

It is a super-2 number, since 2×25031124407² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25031124407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25031124427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515562203 + 12515562204.

It is an arithmetic number, because the mean of its divisors is an integer number (12515562204).

Almost surely, 2^25031124407 is an apocalyptic number.

25031124407 is a deficient number, since it is larger than the sum of its proper divisors (1).

25031124407 is an equidigital number, since it uses as much as digits as its factorization.

25031124407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 25031124407 its reverse (70442113052), we get a palindrome (95473237459).

The spelling of 25031124407 in words is "twenty-five billion, thirty-one million, one hundred twenty-four thousand, four hundred seven".