20125700435 has 32 divisors (see below), whose sum is σ = 24948000000. Its totient is φ = 15576898176.

The previous prime is 20125700423. The next prime is 20125700443. The reversal of 20125700435 is 53400752102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125700435 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20125700398 and 20125700407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15984836 + ... + 15986094.

It is an arithmetic number, because the mean of its divisors is an integer number (779625000).

Almost surely, 2^20125700435 is an apocalyptic number.

20125700435 is a deficient number, since it is larger than the sum of its proper divisors (4822299565).

20125700435 is a wasteful number, since it uses less digits than its factorization.

20125700435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 20125700435 in words is "twenty billion, one hundred twenty-five million, seven hundred thousand, four hundred thirty-five".