25620464 has 20 divisors (see below), whose sum is σ = 49881480. Its totient is φ = 12747840.

The previous prime is 25620461. The next prime is 25620473. The reversal of 25620464 is 46402652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620461) 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, 419 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (2494074).

Almost surely, 2^25620464 is an apocalyptic number.

It is an amenable number.

25620464 is a deficient number, since it is larger than the sum of its proper divisors (24261016).

25620464 is a wasteful number, since it uses less digits than its factorization.

25620464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808 (or 7802 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 25620464 is about 5061.6661288552. Note that the first 3 decimals coincide. The cubic root of 25620464 is about 294.8010302467.

The spelling of 25620464 in words is "twenty-five million, six hundred twenty thousand, four hundred sixty-four".