25545430252 has 24 divisors (see below), whose sum is σ = 45226873440. Its totient is φ = 12623913600.

The previous prime is 25545430249. The next prime is 25545430349. The reversal of 25545430252 is 25203454552.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 174313 + ... + 285439.

It is an arithmetic number, because the mean of its divisors is an integer number (1884453060).

Almost surely, 2^25545430252 is an apocalyptic number.

It is an amenable number.

25545430252 is a deficient number, since it is larger than the sum of its proper divisors (19681443188).

25545430252 is a wasteful number, since it uses less digits than its factorization.

25545430252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111801 (or 111799 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 25545430252 in words is "twenty-five billion, five hundred forty-five million, four hundred thirty thousand, two hundred fifty-two".