25152404251 has 4 divisors (see below), whose sum is σ = 27087204592. Its totient is φ = 23217603912.

The previous prime is 25152404203. The next prime is 25152404257. The reversal of 25152404251 is 15240425152.

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

It is a cyclic number.

It is not a de Polignac number, because 25152404251 - 2⁹ = 25152403739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25152404257) 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, 967400151 + ... + 967400176.

It is an arithmetic number, because the mean of its divisors is an integer number (6771801148).

Almost surely, 2^25152404251 is an apocalyptic number.

25152404251 is a deficient number, since it is larger than the sum of its proper divisors (1934800341).

25152404251 is a wasteful number, since it uses less digits than its factorization.

25152404251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934800340.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 25152404251 in words is "twenty-five billion, one hundred fifty-two million, four hundred four thousand, two hundred fifty-one".