25240431423 has 8 divisors (see below), whose sum is σ = 33763531648. Its totient is φ = 16772142744.

The previous prime is 25240431413. The next prime is 25240431431. The reversal of 25240431423 is 32413404252.

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

It is not a de Polignac number, because 25240431423 - 2²¹ = 25238334271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25240431413) 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, 13701811 + ... + 13703652.

It is an arithmetic number, because the mean of its divisors is an integer number (4220441456).

Almost surely, 2^25240431423 is an apocalyptic number.

25240431423 is a deficient number, since it is larger than the sum of its proper divisors (8523100225).

25240431423 is a wasteful number, since it uses less digits than its factorization.

25240431423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27405773.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 25240431423 its reverse (32413404252), we get a palindrome (57653835675).

The spelling of 25240431423 in words is "twenty-five billion, two hundred forty million, four hundred thirty-one thousand, four hundred twenty-three".