25031140 has 48 divisors (see below), whose sum is σ = 56391552. Its totient is φ = 9299456.

The previous prime is 25031131. The next prime is 25031143. The reversal of 25031140 is 4113052.

It is not an unprimeable number, because it can be changed into a prime (25031143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27777 + ... + 28663.

It is an arithmetic number, because the mean of its divisors is an integer number (1174824).

Almost surely, 2^25031140 is an apocalyptic number.

25031140 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 25031140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28195776).

25031140 is an abundant number, since it is smaller than the sum of its proper divisors (31360412).

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

25031140 is a wasteful number, since it uses less digits than its factorization.

25031140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25031140 is about 5003.1130309039. The cubic root of 25031140 is about 292.5231286652.

Adding to 25031140 its reverse (4113052), we get a palindrome (29144192).

The spelling of 25031140 in words is "twenty-five million, thirty-one thousand, one hundred forty".