25012878 has 48 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 7493200.

The previous prime is 25012861. The next prime is 25012879. The reversal of 25012878 is 87821052.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012879) 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, 94975 + ... + 95237.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^25012878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25012878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27808704).

25012878 is an abundant number, since it is smaller than the sum of its proper divisors (30604530).

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

25012878 is a wasteful number, since it uses less digits than its factorization.

25012878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 25012878 is about 5001.2876341998. The cubic root of 25012878 is about 292.4519725367.

The spelling of 25012878 in words is "twenty-five million, twelve thousand, eight hundred seventy-eight".