25123878 has 48 divisors (see below), whose sum is σ = 60477840. Its totient is φ = 7727616.

The previous prime is 25123877. The next prime is 25123883. The reversal of 25123878 is 87832152.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7750 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (1259955).

Almost surely, 2^25123878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25123878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30238920).

25123878 is an abundant number, since it is smaller than the sum of its proper divisors (35353962).

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

25123878 is a wasteful number, since it uses less digits than its factorization.

25123878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2771 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 25123878 is about 5012.3724921438. The cubic root of 25123878 is about 292.8839402577.

The spelling of 25123878 in words is "twenty-five million, one hundred twenty-three thousand, eight hundred seventy-eight".