25714440 has 48 divisors (see below), whose sum is σ = 83573100. Its totient is φ = 6857088.

The previous prime is 25714439. The next prime is 25714441. The reversal of 25714440 is 4441752.

It is an interprime number because it is at equal distance from previous prime (25714439) and next prime (25714441).

It can be written as a sum of positive squares in 2 ways, for example, as 21958596 + 3755844 = 4686^2 + 1938^2 .

It is a super-2 number, since 2×25714440² = 1322464849027200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25714441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35355 + ... + 36074.

Almost surely, 2^25714440 is an apocalyptic number.

25714440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25714440 is an abundant number, since it is smaller than the sum of its proper divisors (57858660).

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

25714440 is a wasteful number, since it uses less digits than its factorization.

25714440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71446 (or 71439 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 25714440 is about 5070.9407411249. The cubic root of 25714440 is about 295.1610343616.

The spelling of 25714440 in words is "twenty-five million, seven hundred fourteen thousand, four hundred forty".