25148864 has 56 divisors (see below), whose sum is σ = 54364128. Its totient is φ = 11473920.

The previous prime is 25148813. The next prime is 25148869. The reversal of 25148864 is 46884152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25148869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138854 + ... + 139034.

It is an arithmetic number, because the mean of its divisors is an integer number (970788).

Almost surely, 2^25148864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25148864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27182064).

25148864 is an abundant number, since it is smaller than the sum of its proper divisors (29215264).

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

25148864 is a wasteful number, since it uses less digits than its factorization.

25148864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 363 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 25148864 is about 5014.8643052430. The cubic root of 25148864 is about 292.9810002939.

The spelling of 25148864 in words is "twenty-five million, one hundred forty-eight thousand, eight hundred sixty-four".