20434263025 has 24 divisors (see below), whose sum is σ = 28533673728. Its totient is φ = 14381880000.

The previous prime is 20434263001. The next prime is 20434263107. The reversal of 20434263025 is 52036243402.

It is a de Polignac number, because none of the positive numbers 2^k-20434263025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 23 ways as a sum of consecutive naturals, for example, 1189966 + ... + 1207015.

It is an arithmetic number, because the mean of its divisors is an integer number (1188903072).

Almost surely, 2^20434263025 is an apocalyptic number.

20434263025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20434263025 is a deficient number, since it is larger than the sum of its proper divisors (8099410703).

20434263025 is a wasteful number, since it uses less digits than its factorization.

20434263025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397033 (or 2397028 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

The spelling of 20434263025 in words is "twenty billion, four hundred thirty-four million, two hundred sixty-three thousand, twenty-five".