25242551051 has 4 divisors (see below), whose sum is σ = 25340771352. Its totient is φ = 25144330752.

The previous prime is 25242551027. The next prime is 25242551111. The reversal of 25242551051 is 15015524252.

It is a happy number.

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 25242551051 - 2¹⁰ = 25242550027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25242550999 and 25242551017.

It is not an unprimeable number, because it can be changed into a prime (25242553051) 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, 49109765 + ... + 49110278.

It is an arithmetic number, because the mean of its divisors is an integer number (6335192838).

Almost surely, 2^25242551051 is an apocalyptic number.

25242551051 is a deficient number, since it is larger than the sum of its proper divisors (98220301).

25242551051 is an equidigital number, since it uses as much as digits as its factorization.

25242551051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98220300.

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 25242551051 in words is "twenty-five billion, two hundred forty-two million, five hundred fifty-one thousand, fifty-one".