25612420 has 24 divisors (see below), whose sum is σ = 54394200. Its totient is φ = 10129152.

The previous prime is 25612403. The next prime is 25612429. The reversal of 25612420 is 2421652.

It can be written as a sum of positive squares in 4 ways, for example, as 49284 + 25563136 = 222^2 + 5056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25612391 and 25612400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25612429) 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, 5415 + ... + 8974.

It is an arithmetic number, because the mean of its divisors is an integer number (2266425).

Almost surely, 2^25612420 is an apocalyptic number.

25612420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25612420 is an abundant number, since it is smaller than the sum of its proper divisors (28781780).

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

25612420 is a wasteful number, since it uses less digits than its factorization.

25612420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14487 (or 14485 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25612420 is about 5060.8714664571. The cubic root of 25612420 is about 294.7701743430.

The spelling of 25612420 in words is "twenty-five million, six hundred twelve thousand, four hundred twenty".