20824248425 has 48 divisors (see below), whose sum is σ = 28097279040. Its totient is φ = 15256200960.

The previous prime is 20824248409. The next prime is 20824248427. The reversal of 20824248425 is 52484242802.

It is not a de Polignac number, because 20824248425 - 2⁴ = 20824248409 is a prime.

It is a super-2 number, since 2×20824248425² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20824248427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2755502 + ... + 2763048.

It is an arithmetic number, because the mean of its divisors is an integer number (585359980).

Almost surely, 2^20824248425 is an apocalyptic number.

20824248425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20824248425 is a deficient number, since it is larger than the sum of its proper divisors (7273030615).

20824248425 is a wasteful number, since it uses less digits than its factorization.

20824248425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7770 (or 7765 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 41.

The spelling of 20824248425 in words is "twenty billion, eight hundred twenty-four million, two hundred forty-eight thousand, four hundred twenty-five".