20100342425 has 24 divisors (see below), whose sum is σ = 25203892056. Its totient is φ = 15900272640.

The previous prime is 20100342407. The next prime is 20100342439. The reversal of 20100342425 is 52424300102.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 2829388864 + 17270953561 = 53192^2 + 131419^2 .

It is not a de Polignac number, because 20100342425 - 2¹² = 20100338329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100342425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3326507 + ... + 3332543.

It is an arithmetic number, because the mean of its divisors is an integer number (1050162169).

Almost surely, 2^20100342425 is an apocalyptic number.

20100342425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20100342425 is a deficient number, since it is larger than the sum of its proper divisors (5103549631).

20100342425 is a wasteful number, since it uses less digits than its factorization.

20100342425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517 (or 7512 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20100342425 its reverse (52424300102), we get a palindrome (72524642527).

The spelling of 20100342425 in words is "twenty billion, one hundred million, three hundred forty-two thousand, four hundred twenty-five".