25254402239 has 4 divisors (see below), whose sum is σ = 27550257000. Its totient is φ = 22958547480.

The previous prime is 25254402227. The next prime is 25254402263. The reversal of 25254402239 is 93220445252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25254402239 - 2⁸ = 25254401983 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 (25254402289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147927364 + ... + 1147927385.

It is an arithmetic number, because the mean of its divisors is an integer number (6887564250).

Almost surely, 2^25254402239 is an apocalyptic number.

25254402239 is a deficient number, since it is larger than the sum of its proper divisors (2295854761).

25254402239 is a wasteful number, since it uses less digits than its factorization.

25254402239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295854760.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 25254402239 in words is "twenty-five billion, two hundred fifty-four million, four hundred two thousand, two hundred thirty-nine".