25780326 has 32 divisors (see below), whose sum is σ = 60576768. Its totient is φ = 7211040.

The previous prime is 25780297. The next prime is 25780331. The reversal of 25780326 is 62308752.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14166 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (1893024).

Almost surely, 2^25780326 is an apocalyptic number.

25780326 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25780326 is an abundant number, since it is smaller than the sum of its proper divisors (34796442).

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

25780326 is a wasteful number, since it uses less digits than its factorization.

25780326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30076.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25780326 is about 5077.4330128521. The cubic root of 25780326 is about 295.4129083330.

It can be divided in two parts, 25780 and 326, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 25780326 in words is "twenty-five million, seven hundred eighty thousand, three hundred twenty-six".