421000526025261 has 24 divisors (see below), whose sum is σ = 748445379601920. Its totient is φ = 222066211529376.

The previous prime is 421000526025223. The next prime is 421000526025301. The reversal of 421000526025261 is 162520625000124.

421000526025261 is a `hidden beast` number, since 4 + 2 + 100 + 0 + 5 + 26 + 0 + 2 + 526 + 1 = 666.

It is not a de Polignac number, because 421000526025261 - 2¹⁰ = 421000526024237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421000526023261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257021077341 + ... + 257021078978.

It is an arithmetic number, because the mean of its divisors is an integer number (31185224150080).

Almost surely, 2^{421000526025261} is an apocalyptic number.

It is an amenable number.

421000526025261 is a deficient number, since it is larger than the sum of its proper divisors (327444853576659).

421000526025261 is a wasteful number, since it uses less digits than its factorization.

421000526025261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514042156345 (or 514042156342 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 421000526025261 in words is "four hundred twenty-one trillion, five hundred twenty-six million, twenty-five thousand, two hundred sixty-one".