25402553053 has 4 divisors (see below), whose sum is σ = 25410541948. Its totient is φ = 25394564160.

The previous prime is 25402553047. The next prime is 25402553069. The reversal of 25402553053 is 35035520452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15051118489 + 10351434564 = 122683^2 + 101742^2 .

It is a cyclic number.

It is not a de Polignac number, because 25402553053 - 2¹⁷ = 25402421981 is a prime.

It is a super-2 number, since 2×25402553053² (a number of 22 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 (25402553003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3989676 + ... + 3996037.

It is an arithmetic number, because the mean of its divisors is an integer number (6352635487).

Almost surely, 2^25402553053 is an apocalyptic number.

It is an amenable number.

25402553053 is a deficient number, since it is larger than the sum of its proper divisors (7988895).

25402553053 is an equidigital number, since it uses as much as digits as its factorization.

25402553053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988894.

The product of its (nonzero) digits is 90000, while the sum is 34.

The spelling of 25402553053 in words is "twenty-five billion, four hundred two million, five hundred fifty-three thousand, fifty-three".