25421464 has 8 divisors (see below), whose sum is σ = 47665260. Its totient is φ = 12710728.

The previous prime is 25421453. The next prime is 25421483. The reversal of 25421464 is 46412452.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1588834 + ... + 1588849.

Almost surely, 2^25421464 is an apocalyptic number.

It is an amenable number.

25421464 is a deficient number, since it is larger than the sum of its proper divisors (22243796).

25421464 is a wasteful number, since it uses less digits than its factorization.

25421464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177689 (or 3177685 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 25421464 is about 5041.9702498131. The cubic root of 25421464 is about 294.0357832022.

The spelling of 25421464 in words is "twenty-five million, four hundred twenty-one thousand, four hundred sixty-four".