25235404823 has 2 divisors, whose sum is σ = 25235404824. Its totient is φ = 25235404822.

The previous prime is 25235404787. The next prime is 25235404867. The reversal of 25235404823 is 32840453252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25235404823 - 2¹² = 25235400727 is a prime.

It is a super-2 number, since 2×25235404823² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25235404123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12617702411 + 12617702412.

It is an arithmetic number, because the mean of its divisors is an integer number (12617702412).

Almost surely, 2^25235404823 is an apocalyptic number.

25235404823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25235404823 is an equidigital number, since it uses as much as digits as its factorization.

25235404823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 25235404823 in words is "twenty-five billion, two hundred thirty-five million, four hundred four thousand, eight hundred twenty-three".