25894840 has 16 divisors (see below), whose sum is σ = 58263480. Its totient is φ = 10357920.

The previous prime is 25894837. The next prime is 25894867. The reversal of 25894840 is 4849852.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 647371 = 25894840 / (2 + 5 + 8 + 9 + 4 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 25894793 and 25894802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323646 + ... + 323725.

Almost surely, 2^25894840 is an apocalyptic number.

25894840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25894840 is an abundant number, since it is smaller than the sum of its proper divisors (32368640).

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

25894840 is a wasteful number, since it uses less digits than its factorization.

25894840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647382 (or 647378 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 25894840 is about 5088.6972792651. The cubic root of 25894840 is about 295.8496619081.

The spelling of 25894840 in words is "twenty-five million, eight hundred ninety-four thousand, eight hundred forty".