25021234423 has 16 divisors (see below), whose sum is σ = 28147366080. Its totient is φ = 22122809856.

The previous prime is 25021234391. The next prime is 25021234429. The reversal of 25021234423 is 32443212052.

It is a cyclic number.

It is not a de Polignac number, because 25021234423 - 2⁵ = 25021234391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25021234391 and 25021234400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25021234429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667611 + ... + 704092.

It is an arithmetic number, because the mean of its divisors is an integer number (1759210380).

Almost surely, 2^25021234423 is an apocalyptic number.

25021234423 is a deficient number, since it is larger than the sum of its proper divisors (3126131657).

25021234423 is a wasteful number, since it uses less digits than its factorization.

25021234423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371786.

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

Adding to 25021234423 its reverse (32443212052), we get a palindrome (57464446475).

It can be divided in two parts, 250212 and 34423, that added together give a triangular number (284635 = T₇₅₄).

The spelling of 25021234423 in words is "twenty-five billion, twenty-one million, two hundred thirty-four thousand, four hundred twenty-three".