25015380 has 72 divisors (see below), whose sum is σ = 75876192. Its totient is φ = 6155136.

The previous prime is 25015373. The next prime is 25015409. The reversal of 25015380 is 8351052.

It is a self number, because there is not a number n which added to its sum of digits gives 25015380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8907 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (1053836).

Almost surely, 2^25015380 is an apocalyptic number.

25015380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25015380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37938096).

25015380 is an abundant number, since it is smaller than the sum of its proper divisors (50860812).

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

25015380 is a wasteful number, since it uses less digits than its factorization.

25015380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 25015380 is about 5001.5377635283. The cubic root of 25015380 is about 292.4617233864.

The spelling of 25015380 in words is "twenty-five million, fifteen thousand, three hundred eighty".