25533754533 has 12 divisors (see below), whose sum is σ = 42150959968. Its totient is φ = 14590716840.

The previous prime is 25533754517. The next prime is 25533754553. The reversal of 25533754533 is 33545733552.

25533754533 is a `hidden beast` number, since 2 + 5 + 533 + 75 + 45 + 3 + 3 = 666.

It is not a de Polignac number, because 25533754533 - 2⁴ = 25533754517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25533754513) 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, 202648783 + ... + 202648908.

Almost surely, 2^25533754533 is an apocalyptic number.

It is an amenable number.

25533754533 is a deficient number, since it is larger than the sum of its proper divisors (16617205435).

25533754533 is a wasteful number, since it uses less digits than its factorization.

25533754533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405297704 (or 405297701 counting only the distinct ones).

The product of its digits is 2835000, while the sum is 45.

The spelling of 25533754533 in words is "twenty-five billion, five hundred thirty-three million, seven hundred fifty-four thousand, five hundred thirty-three".