25726438 has 16 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 12664456.

The previous prime is 25726411. The next prime is 25726447. The reversal of 25726438 is 83462752.

It is a super-2 number, since 2×25726438² = 1323699224335688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25726397 and 25726406.

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, 50895 + ... + 51397.

It is an arithmetic number, because the mean of its divisors is an integer number (2449440).

Almost surely, 2^25726438 is an apocalyptic number.

25726438 is a deficient number, since it is larger than the sum of its proper divisors (13464602).

25726438 is a wasteful number, since it uses less digits than its factorization.

25726438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its digits is 80640, while the sum is 37.

The square root of 25726438 is about 5072.1236183674. The cubic root of 25726438 is about 295.2069332346.

The spelling of 25726438 in words is "twenty-five million, seven hundred twenty-six thousand, four hundred thirty-eight".