25010040 has 64 divisors (see below), whose sum is σ = 81855360. Its totient is φ = 6062720.

The previous prime is 25010033. The next prime is 25010071. The reversal of 25010040 is 4001052.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 25009998 and 25010025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8154 + ... + 10793.

It is an arithmetic number, because the mean of its divisors is an integer number (1278990).

Almost surely, 2^25010040 is an apocalyptic number.

25010040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25010040 is an abundant number, since it is smaller than the sum of its proper divisors (56845320).

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

25010040 is a wasteful number, since it uses less digits than its factorization.

25010040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18972 (or 18968 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 25010040 is about 5001.0038992186. The cubic root of 25010040 is about 292.4409114333.

Adding to 25010040 its reverse (4001052), we get a palindrome (29011092).

The spelling of 25010040 in words is "twenty-five million, ten thousand, forty".