25497655203 has 8 divisors (see below), whose sum is σ = 34149326848. Its totient is φ = 16922210184.

The previous prime is 25497655193. The next prime is 25497655223. The reversal of 25497655203 is 30255679452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25497655203 - 2⁵ = 25497655171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25497655223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19055875 + ... + 19057212.

It is an arithmetic number, because the mean of its divisors is an integer number (4268665856).

Almost surely, 2^25497655203 is an apocalyptic number.

25497655203 is a deficient number, since it is larger than the sum of its proper divisors (8651671645).

25497655203 is a wasteful number, since it uses less digits than its factorization.

25497655203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38113313.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 25497655203 in words is "twenty-five billion, four hundred ninety-seven million, six hundred fifty-five thousand, two hundred three".