25229986452 has 36 divisors (see below), whose sum is σ = 69573600096. Its totient is φ = 7645450320.

The previous prime is 25229986427. The next prime is 25229986471. The reversal of 25229986452 is 25468992252.

25229986452 is a `hidden beast` number, since 2 + 5 + 22 + 99 + 86 + 452 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 31855648 + ... + 31856439.

Almost surely, 2^25229986452 is an apocalyptic number.

25229986452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25229986452 is an abundant number, since it is smaller than the sum of its proper divisors (44343613644).

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

25229986452 is a wasteful number, since it uses less digits than its factorization.

25229986452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63712108 (or 63712103 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 25229986452 in words is "twenty-five billion, two hundred twenty-nine million, nine hundred eighty-six thousand, four hundred fifty-two".