25140464 has 20 divisors (see below), whose sum is σ = 50027304. Its totient is φ = 12230208.

The previous prime is 25140463. The next prime is 25140481. The reversal of 25140464 is 46404152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20642 + ... + 21825.

Almost surely, 2^25140464 is an apocalyptic number.

It is an amenable number.

25140464 is a deficient number, since it is larger than the sum of its proper divisors (24886840).

25140464 is a wasteful number, since it uses less digits than its factorization.

25140464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42512 (or 42506 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25140464 is about 5014.0267250983. The cubic root of 25140464 is about 292.9483770250.

The spelling of 25140464 in words is "twenty-five million, one hundred forty thousand, four hundred sixty-four".