25251142238 has 128 divisors (see below), whose sum is σ = 46942156800. Its totient is φ = 9963233280.

The previous prime is 25251142237. The next prime is 25251142243. The reversal of 25251142238 is 83224115252.

It is a junction number, because it is equal to n+sod(n) for n = 25251142198 and 25251142207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251142237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126890063 + ... + 126890261.

It is an arithmetic number, because the mean of its divisors is an integer number (366735600).

Almost surely, 2^25251142238 is an apocalyptic number.

25251142238 is a deficient number, since it is larger than the sum of its proper divisors (21691014562).

25251142238 is a wasteful number, since it uses less digits than its factorization.

25251142238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442.

The product of its digits is 38400, while the sum is 35.

The spelling of 25251142238 in words is "twenty-five billion, two hundred fifty-one million, one hundred forty-two thousand, two hundred thirty-eight".