25662305452253 has 8 divisors (see below), whose sum is σ = 25706637181368. Its totient is φ = 25617977281024.

The previous prime is 25662305452219. The next prime is 25662305452337. The reversal of 25662305452253 is 35225450326652.

It can be written as a sum of positive squares in 4 ways, for example, as 12875480650564 + 12786824801689 = 3588242^2 + 3575867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25662305452253 - 2²⁰ = 25662304403677 is a prime.

It is a super-2 number, since 2×25662305452253² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25662305452453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13756625 + ... + 15510297.

It is an arithmetic number, because the mean of its divisors is an integer number (3213329647671).

Almost surely, 2^{25662305452253} is an apocalyptic number.

It is an amenable number.

25662305452253 is a deficient number, since it is larger than the sum of its proper divisors (44331729115).

25662305452253 is a wasteful number, since it uses less digits than its factorization.

25662305452253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778943.

The product of its (nonzero) digits is 12960000, while the sum is 50.

The spelling of 25662305452253 in words is "twenty-five trillion, six hundred sixty-two billion, three hundred five million, four hundred fifty-two thousand, two hundred fifty-three".