25157838 has 16 divisors (see below), whose sum is σ = 51486336. Its totient is φ = 8190840.

The previous prime is 25157813. The next prime is 25157849. The reversal of 25157838 is 83875152.

It is a junction number, because it is equal to n+sod(n) for n = 25157796 and 25157805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48498 + ... + 49013.

It is an arithmetic number, because the mean of its divisors is an integer number (3217896).

Almost surely, 2^25157838 is an apocalyptic number.

25157838 is an abundant number, since it is smaller than the sum of its proper divisors (26328498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25157838 is a wasteful number, since it uses less digits than its factorization.

25157838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97559.

The product of its digits is 67200, while the sum is 39.

The square root of 25157838 is about 5015.7589655006. The cubic root of 25157838 is about 293.0158447946.

The spelling of 25157838 in words is "twenty-five million, one hundred fifty-seven thousand, eight hundred thirty-eight".