25342435032021 has 12 divisors (see below), whose sum is σ = 36791555429772. Its totient is φ = 16809195485376.

The previous prime is 25342435032011. The next prime is 25342435032023. The reversal of 25342435032021 is 12023053424352.

25342435032021 is a `hidden beast` number, since 2 + 53 + 42 + 43 + 503 + 2 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20446548629796 + 4895886402225 = 4521786^2 + 2212665^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25342435032021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25342435032023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7146765016 + ... + 7146768561.

It is an arithmetic number, because the mean of its divisors is an integer number (3065962952481).

Almost surely, 2^{25342435032021} is an apocalyptic number.

It is an amenable number.

25342435032021 is a deficient number, since it is larger than the sum of its proper divisors (11449120397751).

25342435032021 is a wasteful number, since it uses less digits than its factorization.

25342435032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14293533780 (or 14293533777 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 25342435032021 its reverse (12023053424352), we get a palindrome (37365488456373).

The spelling of 25342435032021 in words is "twenty-five trillion, three hundred forty-two billion, four hundred thirty-five million, thirty-two thousand, twenty-one".