25438605552 has 40 divisors (see below), whose sum is σ = 73018220880. Its totient is φ = 8479535040.

The previous prime is 25438605551. The next prime is 25438605553. The reversal of 25438605552 is 25550683452.

25438605552 is a `hidden beast` number, since 2 + 5 + 4 + 38 + 60 + 5 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (25438605551) and next prime (25438605553).

It is a junction number, because it is equal to n+sod(n) for n = 25438605498 and 25438605507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25438605551) 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, 29442399 + ... + 29443262.

It is an arithmetic number, because the mean of its divisors is an integer number (1825455522).

Almost surely, 2^25438605552 is an apocalyptic number.

It is an amenable number.

25438605552 is an abundant number, since it is smaller than the sum of its proper divisors (47579615328).

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

25438605552 is a wasteful number, since it uses less digits than its factorization.

25438605552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58885678 (or 58885666 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 25438605552 in words is "twenty-five billion, four hundred thirty-eight million, six hundred five thousand, five hundred fifty-two".