25138187354 has 16 divisors (see below), whose sum is σ = 43214083200. Its totient is φ = 10743496944.

The previous prime is 25138187297. The next prime is 25138187357. The reversal of 25138187354 is 45378183152.

It is a junction number, because it is equal to n+sod(n) for n = 25138187299 and 25138187308.

It is not an unprimeable number, because it can be changed into a prime (25138187357) 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, 2495789 + ... + 2505840.

It is an arithmetic number, because the mean of its divisors is an integer number (2700880200).

Almost surely, 2^25138187354 is an apocalyptic number.

25138187354 is a deficient number, since it is larger than the sum of its proper divisors (18075895846).

25138187354 is a wasteful number, since it uses less digits than its factorization.

25138187354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001997.

The product of its digits is 806400, while the sum is 47.

The spelling of 25138187354 in words is "twenty-five billion, one hundred thirty-eight million, one hundred eighty-seven thousand, three hundred fifty-four".