25266651453 has 6 divisors (see below), whose sum is σ = 36496274334. Its totient is φ = 16844434296.

The previous prime is 25266651439. The next prime is 25266651491. The reversal of 25266651453 is 35415666252.

It can be written as a sum of positive squares in only one way, i.e., 21891273849 + 3375377604 = 147957^2 + 58098^2 .

It is not a de Polignac number, because 25266651453 - 2¹⁷ = 25266520381 is a prime.

It is a super-2 number, since 2×25266651453² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25266651399 and 25266651408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25266651413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1403702850 + ... + 1403702867.

It is an arithmetic number, because the mean of its divisors is an integer number (6082712389).

Almost surely, 2^25266651453 is an apocalyptic number.

It is an amenable number.

25266651453 is a deficient number, since it is larger than the sum of its proper divisors (11229622881).

25266651453 is a wasteful number, since it uses less digits than its factorization.

25266651453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807405723 (or 2807405720 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 25266651453 in words is "twenty-five billion, two hundred sixty-six million, six hundred fifty-one thousand, four hundred fifty-three".