25398738 has 16 divisors (see below), whose sum is σ = 56441760. Its totient is φ = 8466228.

The previous prime is 25398727. The next prime is 25398787. The reversal of 25398738 is 83789352.

25398738 is a `hidden beast` number, since 2 + 539 + 87 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25398693 and 25398702.

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, 235120 + ... + 235227.

It is an arithmetic number, because the mean of its divisors is an integer number (3527610).

Almost surely, 2^25398738 is an apocalyptic number.

25398738 is an abundant number, since it is smaller than the sum of its proper divisors (31043022).

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

25398738 is a wasteful number, since it uses less digits than its factorization.

25398738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470358 (or 470352 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 25398738 is about 5039.7160634306. The cubic root of 25398738 is about 293.9481374574.

The spelling of 25398738 in words is "twenty-five million, three hundred ninety-eight thousand, seven hundred thirty-eight".