25719380 has 12 divisors (see below), whose sum is σ = 54010740. Its totient is φ = 10287744.

The previous prime is 25719307. The next prime is 25719401. The reversal of 25719380 is 8391752.

It can be written as a sum of positive squares in 2 ways, for example, as 5541316 + 20178064 = 2354^2 + 4492^2 .

It is a super-2 number, since 2×25719380² = 1322973015168800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25719380.

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, 642965 + ... + 643004.

It is an arithmetic number, because the mean of its divisors is an integer number (4500895).

Almost surely, 2^25719380 is an apocalyptic number.

25719380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25719380 is an abundant number, since it is smaller than the sum of its proper divisors (28291360).

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

25719380 is a wasteful number, since it uses less digits than its factorization.

25719380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285978 (or 1285976 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 25719380 is about 5071.4278068410. The cubic root of 25719380 is about 295.1799342760.

The spelling of 25719380 in words is "twenty-five million, seven hundred nineteen thousand, three hundred eighty".