25266686453 has 2 divisors, whose sum is σ = 25266686454. Its totient is φ = 25266686452.

The previous prime is 25266686383. The next prime is 25266686461. The reversal of 25266686453 is 35468666252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24754931569 + 511754884 = 157337^2 + 22622^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266686453 - 2¹⁴ = 25266670069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25266686395 and 25266686404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25266686483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633343226 + 12633343227.

It is an arithmetic number, because the mean of its divisors is an integer number (12633343227).

Almost surely, 2^25266686453 is an apocalyptic number.

It is an amenable number.

25266686453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25266686453 is an equidigital number, since it uses as much as digits as its factorization.

25266686453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12441600, while the sum is 53.

The spelling of 25266686453 in words is "twenty-five billion, two hundred sixty-six million, six hundred eighty-six thousand, four hundred fifty-three".