25247997803 has 8 divisors (see below), whose sum is σ = 29634715872. Its totient is φ = 21056245056.

The previous prime is 25247997787. The next prime is 25247997823. The reversal of 25247997803 is 30879974252.

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

It is not a de Polignac number, because 25247997803 - 2⁴ = 25247997787 is a prime.

It is a super-2 number, since 2×25247997803² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25247997823) 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, 48741050 + ... + 48741567.

It is an arithmetic number, because the mean of its divisors is an integer number (3704339484).

Almost surely, 2^25247997803 is an apocalyptic number.

25247997803 is a deficient number, since it is larger than the sum of its proper divisors (4386718069).

25247997803 is an equidigital number, since it uses as much as digits as its factorization.

25247997803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97482661.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 25247997803 in words is "twenty-five billion, two hundred forty-seven million, nine hundred ninety-seven thousand, eight hundred three".