25122364627 has 2 divisors, whose sum is σ = 25122364628. Its totient is φ = 25122364626.

The previous prime is 25122364571. The next prime is 25122364639. The reversal of 25122364627 is 72646322152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25122364627 is a prime.

It is a super-2 number, since 2×25122364627² (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 25122364627.

It is not a weakly prime, because it can be changed into another prime (25122364327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561182313 + 12561182314.

It is an arithmetic number, because the mean of its divisors is an integer number (12561182314).

Almost surely, 2^25122364627 is an apocalyptic number.

25122364627 is a deficient number, since it is larger than the sum of its proper divisors (1).

25122364627 is an equidigital number, since it uses as much as digits as its factorization.

25122364627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

Adding to 25122364627 its reverse (72646322152), we get a palindrome (97768686779).

The spelling of 25122364627 in words is "twenty-five billion, one hundred twenty-two million, three hundred sixty-four thousand, six hundred twenty-seven".