25946267457511 has 2 divisors, whose sum is σ = 25946267457512. Its totient is φ = 25946267457510.

The previous prime is 25946267457491. The next prime is 25946267457541. The reversal of 25946267457511 is 11575476264952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25946267457511 - 2¹¹ = 25946267455463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25946267457541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12973133728755 + 12973133728756.

It is an arithmetic number, because the mean of its divisors is an integer number (12973133728756).

Almost surely, 2^{25946267457511} is an apocalyptic number.

25946267457511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25946267457511 is an equidigital number, since it uses as much as digits as its factorization.

25946267457511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008000, while the sum is 64.

The spelling of 25946267457511 in words is "twenty-five trillion, nine hundred forty-six billion, two hundred sixty-seven million, four hundred fifty-seven thousand, five hundred eleven".