25140420433 has 8 divisors (see below), whose sum is σ = 25502035400. Its totient is φ = 24779271168.

The previous prime is 25140420427. The next prime is 25140420499. The reversal of 25140420433 is 33402404152.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 154927809 + 24985492624 = 12447^2 + 158068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25140420433 - 2²¹ = 25138323281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25140423433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6948 + ... + 224341.

It is an arithmetic number, because the mean of its divisors is an integer number (3187754425).

Almost surely, 2^25140420433 is an apocalyptic number.

It is an amenable number.

25140420433 is a deficient number, since it is larger than the sum of its proper divisors (361614967).

25140420433 is a wasteful number, since it uses less digits than its factorization.

25140420433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232851.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 25140420433 its reverse (33402404152), we get a palindrome (58542824585).

The spelling of 25140420433 in words is "twenty-five billion, one hundred forty million, four hundred twenty thousand, four hundred thirty-three".