12525451391 has 2 divisors, whose sum is σ = 12525451392. Its totient is φ = 12525451390.

The previous prime is 12525451387. The next prime is 12525451397. The reversal of 12525451391 is 19315452521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12525451391 - 2² = 12525451387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12525451397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262725695 + 6262725696.

It is an arithmetic number, because the mean of its divisors is an integer number (6262725696).

Almost surely, 2^12525451391 is an apocalyptic number.

12525451391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12525451391 is an equidigital number, since it uses as much as digits as its factorization.

12525451391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 38.

The spelling of 12525451391 in words is "twelve billion, five hundred twenty-five million, four hundred fifty-one thousand, three hundred ninety-one".