20435367225 has 96 divisors (see below), whose sum is σ = 44029681920. Its totient is φ = 8115978240.

The previous prime is 20435367203. The next prime is 20435367229. The reversal of 20435367225 is 52276353402.

It is not a de Polignac number, because 20435367225 - 2⁷ = 20435367097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20435367229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27961 + ... + 204089.

It is an arithmetic number, because the mean of its divisors is an integer number (458642520).

Almost surely, 2^20435367225 is an apocalyptic number.

20435367225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20435367225 is an abundant number, since it is smaller than the sum of its proper divisors (23594314695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20435367225 is a wasteful number, since it uses less digits than its factorization.

20435367225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176179 (or 176174 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 39.

The spelling of 20435367225 in words is "twenty billion, four hundred thirty-five million, three hundred sixty-seven thousand, two hundred twenty-five".