25140560 has 20 divisors (see below), whose sum is σ = 58451988. Its totient is φ = 10056192.

The previous prime is 25140527. The next prime is 25140589. The reversal of 25140560 is 6504152.

It can be written as a sum of positive squares in 2 ways, for example, as 6512704 + 18627856 = 2552^2 + 4316^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×25140560² = 1264095514227200, which contains 22 as substring.

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, 157049 + ... + 157208.

Almost surely, 2^25140560 is an apocalyptic number.

25140560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25140560 is an abundant number, since it is smaller than the sum of its proper divisors (33311428).

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

25140560 is a wasteful number, since it uses less digits than its factorization.

25140560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314270 (or 314264 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25140560 is about 5014.0362982332. The cubic root of 25140560 is about 292.9487499034.

The spelling of 25140560 in words is "twenty-five million, one hundred forty thousand, five hundred sixty".