25140020633 has 16 divisors (see below), whose sum is σ = 31019546880. Its totient is φ = 19840873536.

The previous prime is 25140020623. The next prime is 25140020657. The reversal of 25140020633 is 33602004152.

It is a cyclic number.

It is not a de Polignac number, because 25140020633 - 2²⁶ = 25072911769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25140020603) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 311813 + ... + 384066.

It is an arithmetic number, because the mean of its divisors is an integer number (1938721680).

Almost surely, 2^25140020633 is an apocalyptic number.

It is an amenable number.

25140020633 is a deficient number, since it is larger than the sum of its proper divisors (5879526247).

25140020633 is a wasteful number, since it uses less digits than its factorization.

25140020633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696296.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 25140020633 its reverse (33602004152), we get a palindrome (58742024785).

The spelling of 25140020633 in words is "twenty-five billion, one hundred forty million, twenty thousand, six hundred thirty-three".