25369380 has 72 divisors (see below), whose sum is σ = 77800632. Its totient is φ = 6690816.

The previous prime is 25369373. The next prime is 25369381. The reversal of 25369380 is 8396352.

It can be written as a sum of positive squares in 4 ways, for example, as 8328996 + 17040384 = 2886^2 + 4128^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25369381) 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, 16734 + ... + 18186.

Almost surely, 2^25369380 is an apocalyptic number.

25369380 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 25369380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38900316).

25369380 is an abundant number, since it is smaller than the sum of its proper divisors (52431252).

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

25369380 is a wasteful number, since it uses less digits than its factorization.

25369380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 25369380 is about 5036.8025571785. The cubic root of 25369380 is about 293.8348371227.

The spelling of 25369380 in words is "twenty-five million, three hundred sixty-nine thousand, three hundred eighty".