25936420 has 24 divisors (see below), whose sum is σ = 54702648. Its totient is φ = 10329600.

The previous prime is 25936409. The next prime is 25936423. The reversal of 25936420 is 2463952.

It can be written as a sum of positive squares in 4 ways, for example, as 3297856 + 22638564 = 1816^2 + 4758^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25936423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130 + ... + 7510.

It is an arithmetic number, because the mean of its divisors is an integer number (2279277).

Almost surely, 2^25936420 is an apocalyptic number.

25936420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25936420 is an abundant number, since it is smaller than the sum of its proper divisors (28766228).

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

25936420 is a wasteful number, since it uses less digits than its factorization.

25936420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631 (or 5629 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 25936420 is about 5092.7811655322. The cubic root of 25936420 is about 296.0079283243.

The spelling of 25936420 in words is "twenty-five million, nine hundred thirty-six thousand, four hundred twenty".