25403623272 has 32 divisors (see below), whose sum is σ = 70565620800. Its totient is φ = 8467874352.

The previous prime is 25403623249. The next prime is 25403623279. The reversal of 25403623272 is 27232630452.

25403623272 is a `hidden beast` number, since 2 + 5 + 4 + 0 + 3 + 623 + 27 + 2 = 666.

It is a super-3 number, since 3×25403623272³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25403623279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58804468 + ... + 58804899.

It is an arithmetic number, because the mean of its divisors is an integer number (2205175650).

Almost surely, 2^25403623272 is an apocalyptic number.

It is an amenable number.

25403623272 is an abundant number, since it is smaller than the sum of its proper divisors (45161997528).

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

25403623272 is a wasteful number, since it uses less digits than its factorization.

25403623272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117609382 (or 117609372 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 25403623272 in words is "twenty-five billion, four hundred three million, six hundred twenty-three thousand, two hundred seventy-two".