25266657152 has 32 divisors (see below), whose sum is σ = 54911914200. Its totient is φ = 11484843520.

The previous prime is 25266657149. The next prime is 25266657179. The reversal of 25266657152 is 25175666252.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×25266657152² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25266657097 and 25266657106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8971127 + ... + 8973942.

Almost surely, 2^25266657152 is an apocalyptic number.

25266657152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25266657152 is an abundant number, since it is smaller than the sum of its proper divisors (29645257048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25266657152 is a wasteful number, since it uses less digits than its factorization.

25266657152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17945094 (or 17945082 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The spelling of 25266657152 in words is "twenty-five billion, two hundred sixty-six million, six hundred fifty-seven thousand, one hundred fifty-two".