25430823 has 12 divisors (see below), whose sum is σ = 40072968. Its totient is φ = 15412560.

The previous prime is 25430813. The next prime is 25430833. The reversal of 25430823 is 32803452.

It is an interprime number because it is at equal distance from previous prime (25430813) and next prime (25430833).

It is not a de Polignac number, because 25430823 - 2¹⁶ = 25365287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25430813) 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, 128340 + ... + 128537.

It is an arithmetic number, because the mean of its divisors is an integer number (3339414).

Almost surely, 2^25430823 is an apocalyptic number.

25430823 is a deficient number, since it is larger than the sum of its proper divisors (14642145).

25430823 is a wasteful number, since it uses less digits than its factorization.

25430823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256894 (or 256891 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 25430823 is about 5042.8982738104. The cubic root of 25430823 is about 294.0718622057.

The spelling of 25430823 in words is "twenty-five million, four hundred thirty thousand, eight hundred twenty-three".